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75 surface-mount fuses C fundamentals 11 surface-mount fuses fundamentals overview te circuit protection offers the widest selection of surface-mount fuses available for addressing a broad range of overcurrent protection applications. helping to prevent costly damage and promote a safe environment for electronic and electrical equipment, our single-use chip fuses provide performance stability to support applications with current ratings from .5a up to 20a. te circuit protection also offers the telecom ft600 fuse for telecommunications applications. this telecom fuse helps comply with north american overcurrent protection requirements, including telcordia, gr-1089, tia-968-a (formerly fcc part 68), and ul60950 3rd edition. multi-layer design for chip fuses the multi-layer design has the benefit of exposing more fuse element surface area to the glass-ceramic absorption material. when the fuse elements open, there is more material for the vaporizing fuse metals to absorb into, resulting in a very efficient and effective quenching of the fuse arc. figure 1 compared the multi-layer design of our sff fuses with standard glass coated designs. the glass coated designs rely on the coating on only one side of the fuse element to absorb the vaporizing fuse material when it opens. therefore, there is much less absorption material available to absorb the fuse metals. the result can be prolonged arcing and possible coating breach. figure 2 shows how the absorption characteristics of the two designs differ. the multi-layer design indicates a clean separation with the fuse element evenly diffusing into the surrounding ceramic substrate. in the glass coated design, the element diffusion takes place in a small portion of the device and is only absorbed by the glass material directly above the area of failure. glass/ceramic substrate multiple fuse elements substrate material single fuse element single-layer glass coated design multi-layer design glass coating figure 1 figure 2 fault zones multi-layer design single-layer glass coated design wire-in-air design for 2410sfv fuses the 2410(6125) is a wire-in-air smd fuse which is very suitable for secondary level over current protection applications. figure 3 compared our straight wire element design 2410sfv fuses with normal corrugating wire design fuse. the straight wire element in air performs consistent fusing and cutting characteristics together with excellent inrush current withstanding capability. introduced pcb assembly technology into 2410sfv fuses design and manufacture, we achieved on lead free completely and no end cap falling off risk comparing with traditional ceramic body with end cap fuse. glass fiber enforced epoxy body ceramic body corrugate wire element end cap plated with tin straight wire element copper terminal plated with ni and tin figure 3
76 11 pulse cycle derating once the i 2 t value for the application waveform has been determined, it must be derated based on the number of cycles expected over the system lifetime. since the stress induced by the current pulse is mechanical in nature, the number of times the stress is applied has significant bearing on how much derating must be applied to the fuse rating. figure 5 presents the current pulse derating curve for our surface-mount chip fuses up to 100,000 cycles. fuse selection flowchart however, the basic considerations for fuse selection are shown in the flowchart presented in figure 6. following this flow chart will help you select a fuse best suited for your application conditions. surface-mount fuse pulse derating curve 100 1000 10000 100000 100% 10% number of pulses % of minimum i 2 t figure 5 step 1 C determine steady state fuse current rating step 2 C determine pulse waveform by calculating i 2 t step 3 C apply pulse cycle derating step 4 C apply pulse temperature derating step 5 C apply derating for variance in the circuit step 6 C select fuse current rating for pulse environment step 7 C select fuse current rating (use higher value between step 1 and step 6) step 8 C check voltage rating apply standard steady state derating (75%) [i fuse i sys /0.75] apply temperature derating [i fuse i sys /0.75/k temp ] steady state fuse current rating figure 6 selecting surface-mount fuses fuse selection seems straightforward, in that, you pick one which has a current rating just a bit higher than your worstcase system operating current. unfortunately, its not that simple. there are derating considerations for operating current and application temperature. turn-on and other system operations (like processor speed changes or motor start up) cause current surges or spikes that also require consideration when selecting a fuse. so selecting the right fuse for your application is not as simple as knowing the nominal current drawn by the system. temperature derating a fuse is a temperature sensitive device. therefore, operating temperature will have an effect on fuse performance and lifetime. operating temperature should be taken into consideration when selecting the fuse current rating. the thermal derating curve for surface mount fuses is presented in figure 4. use it to determine the derating percentage based on operating temperature and apply it to the derated system current. 1206/0603/0402 series temperature effect on current rating 2410 series temperature effect on current rating -55 -55 -35 -15 5 25 45 65 85 105 125 -35 -15 5 25 45 65 85 105 145 125 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 110 105 100 95 90 85 80 75 70 65 60 55 50 maximum operating temperature (c) maximum operating temperature (c) % de-rating % de-rating figure 4
77 surface-mount fuses C pulse tolerant chip fuses 11 pulse tolerant chip fuses has high inrush current withstand capability and provide overcurrent protection on dc power systems. silver fusing element, monolithic and multilayer design provides strong arc suppression characteristics. these rohs-compliant surface-mount devices facilitate the development of more reliable, high performance consumer electronics such as laptops, multimedia devices, cell phones, and other portable electronics. ? high inrush current withstanding capability ? ceramic monolithic structure ? silver fusing element and silver termination with nickel and tin plating ? excellent temperature stability ? strong arc suppression characteristics ? lead free materials and rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? monolithic, multilayer design ? high-temperature performance ? -55c to +125c operating temperature range ? laptops ? digital cameras ? cell phones benefits features applications ? printers ? dvd players ? portable electronics ? game systems ? lcd monitors ? scanners surface-mount fuses pulse tolerant chip fuses new ne ne ne ne ne ne ne ne ne ne ne ne w w w w w w w w w w w w new
78 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours (min.) 200% 1 seconds (min.) 60 seconds (max.) 1000% 0.0002 second (min.) 0.02 seconds (max.) 0603sfp100f/32-2 1.0 0.210 0.080 32 50 0603sfp150f/32-2 1.5 0.101 0.11 32 50 0603sfp200f/32-2 2.0 0.057 0.24 32 50 0603sfp250f/32-2 2.5 0.042 0.56 32 50 0603sfp300f/32-2 3.0 0.030 0.72 32 50 0603sfp350f/32-2 3.5 0.022 1.10 32 50 0603sfp400f/32-2 4.0 0.018 2.08 32 50 0603sfp450f/32-2 4.5 0.014 2.63 32 50 0603sfp500f/32-2 5.0 0.013 3.25 32 50 1206sfp100f/63-2 1.0 0.340 0.11 63 50 1206sfp150f/63-2 1.5 0.150 0.33 63 50 1206sfp200f/63-2 2.0 0.090 0.80 63 50 1206sfp250f/32-2 2.5 0.070 1.19 32 50 1206sfp300f/32-2 3.0 0.035 1.35 32 50 1206sfp350f/32-2 3.5 0.029 1.84 32 50 1206sfp400f/32-2 4.0 0.023 2.74 32 50 1206sfp450f/32-2 4.5 0.021 3.20 32 50 1206sfp500f/32-2 5.0 0.017 5.50 32 50 * measured at 10% of rated current and 25c ambient temperature. ? melting i 2 t at 0.001 sec clear time. 0603 (1608 mm) pulse tolerant chip fuses 1206 (3216 mm) pulse tolerant chip fuses a b c d shape and dimensions mm (inch) table fp1 clear time characteristics for pulse tolerant chip fuses table fp2 typical electrical characteristics and dimensions for pulse tolerant chip fuses part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings abcd min max min max min max min max mm 1.45 1.75 0.65 0.95 0.21 0.51 0.65 0.95 in (0.057) (0.069) (0.026) (0.037) (0.008) (0.020) (0.026) (0.037) abcd min max min max min max min max mm 3.00 3.40 0.77 1.17 0.26 0.76 1.40 1.80 in (0.118) (0.134) (0.030) (0.046) (0.010) (0.030) (0.055) (0.071) a b c d shape and dimensions mm (inch)
79 surface-mount fuses C pulse tolerant chip fuses rohs compliant, elv compliant hf halogen free 11 clear time (s) 100 10 1 0.1 0.01 0.001 0.0001 10 100 1 current (a) 0603sfp average time current curves 1 . 0 a 1 .5a 2. 0 a 2.5a 3.0a 3.5a 4.0 a 4. 5 a 5. 0 a figure fp1 i 2 t (a 2 s) 10,000 1000 100 10 1 0.1 0.01 0.01 0.001 10 0.1 1 100 0.0001 time (s) 0603sfp i 2 t vs. t curves 1.0a 1.5a 2.0a 2.5a 3.0a 3.5a 4.0a 4.5a 5.0a figure fp2 note: curves are nominal figure fp1-fp4 family performance curves for pulse tolerant chip fuses
80 rohs compliant, elv compliant hf halogen free 11 clear time (s) 10,000 100 1 0.01 0.001 10 100 1 current (a) 1206sfp average time current curves 1 . 0 a 1 .5a 2. 0 a 2.5a 3.0a 3.5 a 4.0 a 4. 5 a 5. 0 a figure fp3 i 2 t (a 2 s) 10,000 100 1 0.01 0.01 1 100 10,000 0.0001 time (s) 1206sfp i 2 t vs. t curves 1.0a 1.5a 2.0a 2.5a 3.0a 3.5a 4.0a 4.5a 5.0a figure fp4 note: curves are nominal please go to page 97 for more information for pulse tolerant chip fuses. figure fp1-fp4 family performance curves for pulse tolerant chip fuses contd
81 surface-mount fuses C 0603 very fast-acting chip fuses 11 very fast-acting chip fuses help provide overcurrent protection on systems using dc power sources up to 32v dc . the fuses monolithic, multilayer design provides the highest hold current in the smallest footprint, reduces diffusion-related aging, improves product reliability and resilience, and enhances high-temperature performance in a wide range of circuit designs. these rohs-compliant surface-mount devices offer strong arc suppression characteristics and facilitate the development of more reliable, high performance consumer electronics such as laptops, multimedia devices, cell phones, and other portable electronics. ? very fast acting at 200% and 300% overloads ? excellent inrush current withstanding capability at high overloads ? thin body for space limiting applications ? glass ceramic monolithic structure ? silver fusing element and silver termination with nickel and tin plating ? rohs compliant and lead-free materials ? symmetrical design with marking on both sides (optional) ? lead free materials and rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? monolithic, multilayer design ? high-temperature performance ? -55c to +125c operating temperature range ? laptops ? digital cameras ? cell phones benefits features applications ? printers ? dvd players ? portable electronics ? game systems ? lcd monitors ? scanners surface-mount fuses 0603 very fast-acting chip fuses new ne ne ne ne ne ne ne ne ne ne ne ne w w w w w w w w w w w w new
82 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours (min.) 200% 0.01 second (min.) 5 seconds (max.) 300% 0.001 second (min.) 0.2 seconds (max.) 0603sfv050f/32-2 0.5 0.860 0.0093 32 50 0603sfv075f/32-2 0.8 0.450 0.0191 32 50 0603sfv100f/32-2 1.0 0.280 0.0360 32 50 0603sfv125f/32-2 1.3 0.205 0.0630 32 35 0603sfv150f/32-2 1.5 0.143 0.0950 32 35 0603sfv175f/32-2 1.8 0.095 0.1400 32 35 0603sfv200f/32-2 2.0 0.073 0.2100 32 35 0603sfv250f/32-2 2.5 0.046 0.3000 32 35 0603sfv300f/32-2 3.0 0.039 0.4600 32 35 0603sfv350f/32-2 3.5 0.028 0.7300 32 35 0603sfv400f/32-2 4.0 0.023 1.1500 32 35 0603sfv450f/32-2 4.5 0.019 1.6800 32 35 0603sfv500f/32-2 5.0 0.015 2.6200 32 35 * measured at 10% of rated current and 25c part number 0603 (1608 mm) very fast-acting chip fuses a b c d shape and dimensions mm (inch) table fv1 clear time characteristics for very fast-acting chip fuses table fv2 typical electrical characteristics and dimensions for very fast-acting chip fuses rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) typical electrical characteristics max. interrupt ratings please go to page 97 for more information for very fast-acting chip fuses. 1 100 10 clear time (s) 100 10 1 0.1 0.01 0.001 0.0001 current (a) 0603sfv average time current curves 0 . 0 5a 0 . 7 5a 1.0 0a 1. 2 5a 1. 5 0a 1.75a 2. 0 0a 2.5 0a 3.00 a 3.50a 4.00a 4. 5 0 a 5. 0 0a 0603sfv i2t vs. t curves i2t (a2s) time (s) 1000 100 10 1 0.1 0.01 0.001 0.0001 0.0001 0.001 0.1 0.01 1 10 5.00a 4.50a 4.00a 3.50a 3.00a 2.50a 2.00a 1.75a 0.75a 0.05a 1.25a 1.50a 1.00a figure fv2 figure fv1 note: curves are nominal figure fv1-fv2 family performance curves for very fast-acting chip fuses abcd min max min max min max min max mm 1.45 1.75 0.22 0.48 0.21 0.51 0.65 0.95 in (0.057) (0.069) (0.009) (0.019) (0.008) (0.020) (0.025) (0.037)
83 surface-mount fuses C fast-acting chip fuses 11 fast-acting chip fuses help provide overcurrent protection on systems using dc power sources up to 63v dc . the fuses monolithic, multilayer design provides the highest hold current in the smallest footprint, reduces diffusion- related aging, improves product reliability and resilience, and enhances high-temperature performance in a wide range of circuit designs. these rohs-compliant surface-mount devices offer strong arc suppression characteristics and facilitate the development of more reliable, high performance consumer electronics such as laptops, multimedia devices, cell phones, and other portable electronics. ? small size with high-current ratings ? excellent temperature stability ? high reliability and resilience ? strong arc suppression characteristics ? lead free materials and rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? monolithic, multilayer design ? high-temperature performance ? -55c to +125c operating temperature range ? laptops ? digital cameras ? cell phones benefits features applications ? printers ? dvd players ? portable electronics ? game systems ? lcd monitors ? scanners surface-mount fuses fast-acting chip fuses
84 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours min. 250% 5 seconds max. 400% 0.05 seconds max. 0402sff050f/24 0.50 0.380 0.0043 24 35 0402sff075f/24 0.75 0.210 0.0076 24 35 0402sff100f/24 1.00 0.120 0.0170 24 35 0402sff150f/24 1.50 0.056 0.0490 24 35 0402sff200f/24 2.00 0.035 0.0700 24 35 0402sff300f/24 3.00 0.021 0.1250 24 35 0402sff400f/24 4.00 0.014 0.2250 24 35 part number 0603sff050f/32 0.50 0.485 0.0029 32 50 0603sff075f/32 0.75 0.254 0.0064 32 50 0603sff100f/32 1.00 0.131 0.0160 32 50 0603sff150f/32 1.50 0.059 0.0300 32 35 0603sff200f/32 2.00 0.044 0.0600 32 35 0603sff250f/32 2.50 0.032 0.1150 32 35 0603sff300f/32 3.00 0.025 0.1900 32 35 0603sff350f/32 3.50 0.024 0.2950 32 35 0603sff400f/32 4.00 0.018 0.4000 32 35 0603sff500f/32 5.00 0.013 0.7000 32 35 0603sff600f/24 6.00 0.010 1.1250 24 35 1206sff050f/63 0.50 0.730 0.0021 63 50 1206sff075f/63 0.75 0.513 0.0052 63 50 1206sff100f/63 1.00 0.220 0.0120 63 50 1206sff150f/63 1.50 0.120 0.0250 63 50 1206sff175f/63 1.75 0.100 0.0450 63 50 1206sff200f/63 2.00 0.050 0.0700 63 50 1206sff250f/32 2.50 0.035 0.1400 32 50 1206sff300f/32 3.00 0.031 0.2200 32 50 1206sff400f/32 4.00 0.022 0.3800 32 45 1206sff500f/32 5.00 0.015 0.6000 32 45 1206sff600f/32 6.00 0.013 1.0000 32 50 1206sff700f/32 7.00 0.011 1.7500 32 50 1206sff800f/32 8.00 0.008 2.5000 32 50 1206sff600f/24 6.00 0.013 1.0000 24 45 1206sff700f/24 7.00 0.011 1.7500 24 45 1206sff800f/24 8.00 0.008 2.5000 24 45 * measured at 10% of rated current and 25c ambient temperature. ? melting i 2 t at 0.001 sec clear time. 0402 (1005mm) fast-acting chip fuses 0603 (1608mm) fast-acting chip fuses 1206 (3216mm) fast-acting chip fuses 0.063 ( 1. 6 0) 0.0390. 004 (1.000.10) 0.0200. 004 (0.510. 10) 0.0100. 004 (0.250. 10) 0.0200. 004 (0.510. 10) s shape and dimensions inch (mm) recommended pad layout inch (mm) 0.028 (0.70) 0.024 (0.60) 0.016 (0.40) 0 shape and dimensions inch (mm) recommended pad layout inch (mm) 0.0310. 006 (0.800.15) 0 0.0310. 006 (0.800.15) 0.0140.006 (0.360. 15) 0.0630. 006 ( 1. 6 00.15) 0 0.110 (2.80) 0.039 (1.00) 0.043 ( 1. 0 9) 0.024 (0.60) 0 shape and dimensions inch (mm) recommended pad layout inch (mm) 0.0630. 008 ( 1. 6 00.20) 0.1260. 008 (3.200.20) 0.0430. 008 ( 1. 1 00.20) 0.0200.010 (0.510.25) 0.173 (4.40) 0.071 ( 1. 8 0) 0.057 ( 1. 4 5) 0.059 ( 1. 5 0) table ff1 clear time characteristics for fast-acting chip fuses table ff2 typical electrical characteristics, dimensions and recommended pad layout for fast-acting chip fuses rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings
85 surface-mount fuses C fast-acting chip fuses rohs compliant, elv compliant hf halogen free 11 0.1 10 1 100 clear-time (s) 10 1 0.1 0.01 0.001 current (a) 0402sff average time current curves 0 . 5 a 0 .75a 1. 0a 1. 5a 2. 0 a 3 . 0a 4. 0 a 0.001 0.01 0.1 1 10 1000 100 10 1 0.1 0.01 0.001 i2t (a2s) time (s) 0402sff i2t vs. t curves 0.5a 0.75a 1.0a 1.5a 2.0a 3.0a 4.0a figure ff2 figure ff1 10 1 0.1 0.01 0.001 1 0.1 10 100 current (a) clear-time (s) 0603sff average time current curves 0 . 5a 0 . 75a 1 . 0 a 1 .5a 2. 0 a 2.5a 3.0a 3.5 a 4.0 a 5. 0 a 6.0a 0.001 0.01 0.1 1 10 10000 1000 100 10 1 0.1 0.01 0.001 i2t (a2s) time (s) 0603sff i2t vs. t curves 0.5a 0.75a 1.0a 1.5a 2.0a 2.5a 3.0a 3.5a 4.0a 5.0a 6.0a figure ff4 figure ff3 note: curves are nominal note: curves are nominal figure ff1-ff6 family performance curves for fast-acting chip fuses
86 rohs compliant, elv compliant hf halogen free 11 0.1 10 1 100 clear-time (s) 10 1 0.1 0.01 0.001 current (a) 1206sff average time current curves 0 . 5a 0 . 75a 1 . 0 a 1 .5a 1.75 a 2. 0 a 2.5a 3.0a 4.0 a 5. 0 a 6.0a 7.0a 8. 0a i2t (a2s) 10000 1000 100 10 1 0.1 0.01 0.001 time (s) 1206sff i2t vs. t curves 0.001 0.01 0.1 1 10 0.5a 0.75a 1.0a 1.5a 1.75a 2.0a 2.5a 3.0a 4.0a 5.0a 6.0a 7.0a 8.0a figure ff6 figure ff5 note: curves are nominal please go to page 97 for more information for fast-acting chip fuses. figure ff1-ff6 family performance curves for fast-acting chip fuses contd
87 high-current rated chip fuses 11 the monolithic multilayer design of the te circuit protection high-current-rated chip fuses helps to provide some of the highest current ratings available in the 1206 size and enhances high-temperature performance in a wide range of circuit protection designs. the devices small size, high reliability and strong arc suppression characteristics make them suitable for overcurrent protection of power supplies, servers, communications equipment, voltage regulator modules, and other high-current, small size applications. ? glass ceramic monolithic structure provides stability in application cycling ? high-current rating in a small package allows more efficient use in system space ? strong arc suppression in overcurrent conditions ? lead free materials and rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? monolithic multilayer design ? high-temperature performance ? -55c to +125c operating temperature range ? communications equipment ? voltage regulator modules ? power supplies ? servers benefits features applications surface-mount fuses high-current-rated chip fuses
88 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours (min.) 250% 5 seconds (max.) 1206sfh series 1206sfh100f/24 10 0.010 9 24 100 1206sfh120f/24 12 0.008 14 24 100 1206sfh150f/24 15 0.005 26 24 100 1206sfh200f/24 20 0.003 56 24 100 * measured at 10% of rated current and 25c ambient temperature. ? melting i 2 t at 0.001 sec clear time. part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) 1206 (3216mm) high-current-rated chip fuses shape and dimensions inch (mm) recommended pad l ayout inch (mm) 0.0630. 008 ( 1. 6 00.20) 0.1260. 008 (3.200.20) 0.0380. 008 (0.970.20) 0.0200.010 (0.510.25) 0.173 (4.40) 0.071 ( 1. 8 0) 0.057 ( 1. 4 5) 0.059 ( 1. 5 0) nominal i 2 t (a 2 sec) ? typical electrical characteristics max. interrupt ratings 10 1000 100 clear time (s) 10 1 0.1 0.01 0.001 current (a) 1206sfh average time current curves 10a 12a 1 5 a 2 0 a 0.001 0.01 0.1 1 10 10000 1000 100 10 1 i2t (a2s) time (s) 1206sfh i2t vs. t curves 20a 15a 12a 10a figure fh2 figure fh1 note: curves are nominal table fh1 clear time characteristics for high-current-rated chip fuses table fh2 typical electrical characteristics, dimensions and recommended pad layout for high-current-rated chip fuses figure fh1-fh2 family performance curves for high-current-rated chip fuses please go to page 97 for more information for high-current-rated chip fuses.
89 surface-mount fuses C slow-blow chip fuses 11 available in industry standard 1206 and 0603 chip sizes, te circuit protections slow-blow chip fuses help provide overcurrent protection on systems that experience large and frequent current surges as part of their normal operation. the slow-blow chip fuses monolithic, multilayer design helps provide some of the highest current ratings available in the 1206 and 0603 footprints and enhances high-temperature performance in a wide range of circuit protection designs. the devices small size, high reliability and strong arc suppression characteristics make them suitable for overcurrent protection of power supplies, capacitor filter banks, lcd (liquid crystal display) backlight inverters, electric motors and portable electronics. ? time-delayed design prevents nuisance openings in pulsed and high inrush current applications ? small size with high-current ratings ? strong arc suppression characteristics ? lead free materials and rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? monolithic multilayer design ? high-temperature performance ? -55c to +125c operating temperature range ? small motors systems ? portable electronics ? input power ports benefits features applications ? power over ethernet (poe) ? test equipment ? pol converter protection ? computer drives ? displays ? printers surface-mount fuses slow-blow chip fuses
90 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours (min.) 200% 1 second (min.) 120 seconds (max.) 300% 0.1 second (min.) 3 seconds (max.) 800%(1.0a-1.5a) 0.0005 second (min.) 0.05 seconds (max.) 800%(2.0a-5.0a) 0.001 second (min.) 0.05 seconds (max.) % of rated current clear time at 25c 100% 4 hours (min.) 200% 1 second (min.) 120 seconds (max.) 300% 0.1 second (min.) 3 seconds (max.) 800%(1.0a-1.5a) 0.0016 second (min.) 0.05 seconds (max.) 800%(2.0a-8.0a) 0.002 second (min.) 0.05 seconds (max.) 0603sfs series 1206sfs series 1206sfs100f/63 1.0 0.360 0.11 63 50 1206sfs125f/63 1.25 0.200 0.22 63 50 1206sfs150f/63 1.5 0.150 0.23 63 50 1206sfs200f/63 2.0 0.088 0.63 63 50 1206sfs250f/32 2.5 0.065 0.90 32 50 1206sfs300f/32 3.0 0.034 1.20 32 50 1206sfs350f/32 3.5 0.028 1.60 32 50 1206sfs400f/32 4.0 0.024 2.20 32 50 1206sfs450f/32 4.5 0.020 3.60 32 50 1206sfs500f/32 5.0 0.016 5.30 32 50 1206sfs550f/24 5.5 0.014 6.40 24 50 1206sfs600f/24 6.0 0.011 8.50 24 60 1206sfs700f/24 7.0 0.010 10.00 24 60 1206sfs800f/24 8.0 0.009 16.90 24 60 * measured at 10% of rated current and 25c ambient temperature. ? melting i 2 t at 0.001 sec clear time. part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) 1206 (3216mm) slow-blow chip fuses 0603 (1608mm) slow-blow chip fuses shape and dimensions inch (mm) recommended pad layout inch (mm) 0.0630. 008 ( 1. 6 00.20) 0.1260. 008 (3.200.20) 0.0380. 008 (0.970.20) 0.0200.010 (0.510.25) 0.173 (4.40) 0.071 ( 1. 8 0) 0.057 ( 1. 4 5) 0.059 ( 1. 5 0) nominal i 2 t (a 2 sec) ? 0603sfs100f/32 1.0 0.200 0.093 32 50 0603sfs150f/32 1.5 0.100 0.18 32 50 0603sfs200f/32 2.0 0.052 0.32 32 50 0603sfs250f/32 2.5 0.041 0.63 32 50 0603sfs300f/32 3.0 0.031 0.87 32 50 0603sfs350f/32 3.5 0.021 1.20 32 50 0603sfs400f/32 4.0 0.017 2.30 32 50 0603sfs450f/32 4.5 0.015 2.70 32 50 0603sfs500f/32 5.0 0.013 3.20 32 50 part number rated current (a) nominal cold dcr ( ? )* voltage (v dc ) current (a) nominal i 2 t (a 2 sec) ? shape and dimensions inch (mm) recommended pad layout inch (mm) 0.0310. 006 (0.800.15) 0 0.0310. 006 (0.800.15) 0.0140.006 (0.360. 15) 0.0630. 006 ( 1. 6 00.15) 0.110 (2.80) 0.039 (1.00) 0.043 ( 1. 0 9) 0.024 (0.60) 0 typical electrical characteristics max. interrupt ratings typical electrical characteristics max. interrupt ratings table fs1 clear time characteristics for slow-blow chip fuses table fs2 typical electrical characteristics, dimensions and recommended pad layout for slow-blow chip fuses
91 surface-mount fuses C slow-blow chip fuses rohs compliant, elv compliant hf halogen free 11 clear time (s) 100 10 1 0.1 0.01 0.001 10 100 1 current (a) 0603sfs average time current curves 1.0a 1.5a 2. 0 a 2.5 a 3.0 a 3.5 a 4.0a 4. 5a 5. 0 a figure fs1 i 2 t (a 2 s) 10,000 1000 100 10 1 0.1 0.01 0.001 0.01 10 0.1 1 100 time (s) 0603sfs i2t vs. t curves 1.0a 1.5a 2.0a 2.5a 3.0a 3.5a 4.0a 4.5a 5.0a figure fs2 note: curves are nominal figure fs1-fs4 family performance curves for slow-blow chip fuses
92 rohs compliant, elv compliant hf halogen free 11 clear time (s) 100 10 1 0.1 0.01 0.001 10 100 1000 1 current (a) 1206sfs average time current curves 1 . 0 a 1. 25a 1 .5a 2. 0 a 2.5a 3.0a 3.5 a 4.0 a 4. 5 a 5. 0 a 5.5a 6.0a 7.0a 8. 0a figure fs3 i 2 t (a 2 s) 100000 10000 1000 100 10 1 0.1 0.01 0.001 0.01 10 0.1 1 100 time (s) 1206sfs i2t vs. t curves 1.0a 1.5a 2.5a 3.0a 3.5a 4.0a 4.5a 5.0a 5.5a 6.0a 7.0a 8.0a 2.0a 1.25a figure fs4 note: curves are nominal figure fs1-fs4 family performance curves for slow-blow chip fuses contd please go to page 97 for more information for slow-blow chip fuses.
93 surface-mount fuses C 2410 very fast-acting fuses 11 the 2410(6125) is wire-in air smd fuse which is very suitable for secondary level overcurrent protection applications. these lead-free surface mount devices offer more reliability and have no end cap falling off risk. straight wire element in air performs consistent fusing and cutting characteristics. ? very fast acting at 200% overload current level ? excellent inrush current withstanding capability ? high reliability and resilience ? strong arc suppression characteristics ? copper terminal with nickel and tin plated ? halogen free, rohs compliant and 100% lead-free ? copper or copper alloy composite fuse link ? fiberglass enforced epoxy fuse body ? wide range of current rating ? -55c to +125c operating temperature range (with de-rating) ? industrial equipment ? lcd/pdp tv ? backlight inverter benefits features applications ? power supplier ? telecom system ? networking ? game systems ? white goods ? automotive surface-mount fuses 2410 very fast-acting fuses new ne ne ne ne ne ne ne ne ne ne ne ne w w w w w w w w w w w w new
94 rohs compliant, elv compliant hf halogen free 11 % of rated current clear time at 25c 100% 4 hours (min.) 200% (0.5a-10.0a) 0.01 second (min.) 5 seconds (max.) 200% (12.0a-20.0a) 0.01 second (min.) 20 seconds (max.) 2410 (6125 mm) very fast-acting fuse shape and dimensions mm (inch) d a c b table sfv1 clear time characteristics for 2410 very fast-acting fuses table sfv2 typical electrical characteristics, dimensions and recommended pad layout for 2410 very fast-acting fuses part number typical electrical characteristics max. interrupt ratings marking code rated current (a) nominal cold dcr ( ? )* nominal i 2 t (a 2 sec) voltage current (a) (v ac ) (v dc ) 2410sfv0.50fm/125-2 c 0.5 0.2310 0.10 250 125 50a @ 250v ac 50a @ 125v dc 300a @ 32v dc 2410sfv0.63fm/125-2 s 0.6 0.1740 0.16 250 125 2410sfv0.75fm/125-2 d 0.8 0.1480 0.23 250 125 2410sfv1.00fm/125-2 e 1.0 0.0930 0.59 250 125 2410sfv1.25fm/125-2 f 1.3 0.0700 0.96 250 125 2410sfv1.50fm/125-2 g 1.5 0.0620 1.19 125 125 50a @ 125v ac 50a @ 125v dc 300a @ 32v dc 2410sfv2.00fm/125-2 i 2.0 0.0420 2.75 125 125 2410sfv2.50fm/125-2 j 2.5 0.0310 1.21 125 125 2410sfv3.00fm/125-2 k 3.0 0.0249 1.73 125 125 2410sfv3.15fm/125-2 v 3.2 0.0232 2.20 125 125 2410sfv3.50fm/125-2 l 3.5 0.0220 2.50 125 125 2410sfv4.00fm/125-2 m 4.0 0.0172 4.10 125 125 2410sfv5.00fm/125-2 n 5.0 0.0143 5.90 125 125 2410sfv6.30fm/125-2 o 6.3 0.0100 12.50 125 125 2410sfv7.00fm/125-2 p 7.0 0.0094 14.20 125 125 2410sfv8.00fm/125-2 r 8.0 0.0086 20.30 125 125 2410sfv10.0fm/125-2 q 10.0 0.0066 29.20 125 125 35a @ 125v ac 50a @ 125v dc 300a @ 32v dc 2410sfv12.0fm/065-2 x 12.0 0.0053 49.20 65 65 50a @ 65v ac 50a @ 65v dc 300a @ 32v dc 2410sfv15.0fm/065-2 y 15.0 0.0038 102.50 65 65 2410sfv20.0fm/065-2 z 20.0 0.0034 126.20 65 65 50a @ 65v ac 50a @ 65v dc 300a @ 32v dc * measured at 10% of rated current and 25c ambient temperature. recommended pad layout mm (inch) 6.86 (0.270) 3.15 (0.124) 1.96 (0.077) 2.95 (0.116) a bcd min max min max min max min max mm 5.95 6.25 1.96 2.36 0.97 1.73 2.34 2.64 in (0.234) (0.246) (0.077) (0.093) (0.038) (0.068) (0.092) (0.104)
95 surface-mount fuses C 2410 very fast-acting fuses rohs compliant, elv compliant hf halogen free 11 please go to page 97 for more information for 2410 fast-acting fuses. clear time (s) 100 10 1 0.1 0.01 0.001 10 1000 100 1 0.1 current (a) 2410sfv average time current curves 0.63a 0.50a 0.75a 1.00a 1.25a 1.50a 2.00a 2.50a 3.00a 3.15a 3.50a 4.00a 5.00a 6.30a 7.00a 8.00a 10.0a 12.0a 15.0a 20.0a figure sfv1 i 2 t (a 2 s) 100,000 10,000 1000 100 10 1 0.1 0.01 0.01 0.001 10 0.1 1 100 time (s) 2410sfv i 2 t vs. t curves 1.00a 0.50a 0.63a 0.75a 1.50a 1.25a 2.00a 2.50a 3.00a 3.15a 3.50a 4.00a 5.00a 7.00a 8.00a 10.0a 12.0a 15.0a 20.0a 6.30a figure sfv2 figure sfv1-sfv2 family performance curves for 2410 very fast-acting fuses note: curves are nominal
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97 surface-mount fuses - specifications for all fuses rohs compliant, elv compliant hf halogen free 11 specifications, packaging information, agency approvals and part numbering systems for all fuses operating temperature -55c to +125c mechanical vibration withstands 5-3000 hz at 30 gs when evaluated per method 204 of mil-std-202 mechanical shock withstands 1500 gs, 0.5 millisecond half-sine pulses when evaluated per method 213 of mil-std-202 thermal shock withstands 100 cycles from -65c to +125c when evaluated per method 107 of mil-std-202 resistance to soldering heat withstands 60 seconds at +260c when evaluated per method 210 of mil-std-202 solderability meets 95% minimum coverage requirement when evaluated per method 208 of mil-std-202 moisture resistance withstands 10 cycles when evaluated per method 106 of mil-std-202 salt spray withstands 48-hour exposure when evaluated per method 101 of mil-std-202 storage temperature 30c/ 85% rh storage humidity per mil-std-202f, method 106f construction body material ceramic (1206/0603/0402); fiberglass/epoxy (2410) termination material silver, nickel, tin fuse element silver(1206/0603/0402); copper/copper alloy (2410) 1206/0603/0402 series temperature effect on current rating 2410 series temperature effect on current rating % de-rating % de-rating 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 110 105 100 95 90 85 80 75 70 65 60 55 50 maximum operating temperature (?) maximum operating temperature (?) -55 -35 -15 5 25 45 65 85 105 125 145 -55 -35 -15 5 25 45 65 85 105 125 insulation resistance after opening 20,000 ? minimum @ rated voltage. fuse clearing under low voltage conditions may result in lower - post-clearing insulation values. under normal fault conditions te circuit protection fuses provide sufficient insulation resistance for circuit protection. current carrying capacity withstands 100% rated current at +25c ambient for 4 hours when evaluated per mil-prf-23419. table f1 environmental specifications for all fuses table f2 material specifications for all fuses figure f1 thermal derating current for all fuses table f3 electrical specifications for all fuses
98 rohs compliant, elv compliant hf halogen free 11 recommended conditions for hand soldering: 1. using hot air rework station that can reflow the solder on both terminations at the same time is strongly recommended, do not directly contact the chip termination with the tip of soldering iron. 2. preheating: 150c, 60s (min). appropriate temperature (max) of soldering iron tip/soldering time (max): 280c /10s or 350c / 3s. 0402(1005) 10,000 178mm white plastic 9.0 0.5mm 8.00 0.10mm paper 5 1 to 10 0603(1608) 4,000 178mm white plastic 9.0 0.5mm 8.00 0.10mm paper 5 1 to 10 0603sfv(1608) 6,000 178mm white plastic 9.0 0.5mm 8.00 0.10mm paper 5 1 to 10 1206(3216) 3,000 178mm white plastic 9.0 0.5mm 8.00 0.10mm plastic 5 1 to 10 2410(6125) 2,000 178mm white plastic 13.4 0.5mm 12.00 0.10mm plastic 4 1 to 10 size reel quantity (pcs) reel diameter reel width carrier tape size tape type reels per outside shipment box outside shipment boxes per overpack table f4 packaging information for all fuses figure f2 recommended soldering temperature profile for all fuses profile feature 1206/0603/0402 2410 average ramp up rate (ts max to tp) 3c/second max. 3c/second max. preheat ? temperature min. (ts min ) 150c 150c ? temperature max. (ts max ) 200c 200c ? time (ts min to ts max ) 60-180 seconds 40-100 seconds time maintained above: ? temperature (t l ) 217c 200c ? time (t l ) 60-150 seconds 30-90 seconds peak/classification temperature (tp) 260c max. 250c max. time within 5c of actual peak temperature time (tp) 20-40 seconds 30-40 seconds from 25c to preheating (150c) 8 minutes max. 40-100 seconds ramp down rate 4c/second max. natural cooling critical zone t l to tp ramp up t 25? to peak r eflow profile time r amp down ts preheat ts max t l tp tp 25 ts min t l te m perature classification reflow profiles
99 surface-mount fuses - specifications for all fuses rohs compliant, elv compliant hf halogen free 11 p 0 p 0 p 2 p 1 p 1 e 1 e 1 f f w w t d 0 d 0 d 1 d 1 a 0 a 0 b 0 k 0 k 0 b 0 p 2 paper carrier tape specifications plastic carrier tape specifications table f5 tape and reel specifications for all fuses figure f3 component tape dimensions for all fuses dimension in inches (mm) mark 0402 (1005) 0603 (1608) 1206 (3216) 0603sfv (1608) 2410 (6125) e 1 0.069 0.004 0.069 0.004 0.069 0.004 0.069 0.004 0.069 0.004 (1.75 0.10) (1.75 0.10) (1.75 0.10) (1.75 0.10) (1.75 0.10) f 0.138 0.002 0.138 0.002 0.138 0.002 0.138 0.002 0.217 0.004 (3.50 0.05) (3.50 0.05) (3.50 0.05) (3.50 0.05) (5.50 0.10) w 0.315 0.004 0.315 0.004 0.315 0.004 0.315 0.004 0.472 0.004 (8.00 0.10) (8.00 0.10) (8.00 0.10) (8.00 0.10) (12.00 0.10) p 1 0.079 0.004 0.157 0.004 0.157 0.004 0.157 0.004 0.157 0.004 (2.00 0.10) (4.00 0.10) (4.00 0.10) (4.00 0.10) (4.00 0.10) p 0 0.157 0.004 0.157 0.004 0.157 0.004 0.157 0.004 0.157 0.004 (4.00 0.10) (4.00 0.10) (4.00 0.10) (4.00 0.10) (4.00 0.10) p 2 0.079 0.002 0.079 0.002 0.079 0.002 0.079 0.002 0.079 0.004 (2.00 0.05) (2.00 0.05) (2.00 0.05) (2.00 0.05) (2.00 0.10) d 0 0.059 0.004 0.059 0.004 0.059 0.004 0.059 0.004 0.059 0.004 (1.50+0.10/-0.00) (1.50+0.10/-0.00) (1.50+0.10/-0.00) (1.50+0.10/-0.00) (1.50+0.10/-0.00) d 1 0.039 max 0.61 0.004 (1.00 max) (1.55 0.10) t 0.009 0.001 0.010 0.002 (0.23 0.02) (0.25 0.05) a 0 0.026 0.004 0.039 0.004 0.071 0.004 0.039 0.004 0.112 0.004 (0.67 0.10) (0.98 0.10) (1.80 0.10) (0.98 0.10) (2.85 0.10) b 0 0.046 0.004 0.071 0.004 0.138 0.004 0.071 0.004 0.252 0.004 (1.17 0.10) (1.80 0.10) (3.50 0.10) (1.80 0.10) (6.40 0.10) k 0 0.025 0.004 0.037 0.003 0.050 0.004 0.024 0.003 0.093 0.004 (0.63 0.10) (0.95 0.08) (1.27 0.10) (0.60 0.08) (2.35 0.10)
100 rohs compliant, elv compliant hf halogen free 11 dimension description mark 1206/0603/0402 2410 hub outer diameter b 60 60.2 reel inside width w 1 9 13.4 reel outside width w 2 11.4 16 tape width 8 b w 2 w 1 figure f4 reel dimensions for all fuses agency approvals for all fuses ul file # e197536 part numbering system for fast-acting, slow-blow and 0603 very fast-acting chip fuses 1206 sf f 400 f / 24 -2 packaging -2 = tape and reel voltage rating 24 = 24v dc special code f = rohs compliant fm = rohs compliant + marked part rated current 050 = 0.50 amps 400 = 4 amps fuse blow type f = fast acting s = slow blow sf = surface mount fuse size (1206, 0603, 0402) part numbering system for high-current-rated chip fuses 1206 sf h 100 f / 24 -2 packaging -2 = tape and reel voltage rating 24 = 24v dc special code f = rohs compliant fm = rohs compliant + marked part rated current 100 = 10 amps fuse blow type h = high current sf = surface mount fuse size (1206) dimension (mm)
101 surface-mount fuses - specifications for all fuses rohs compliant, elv compliant hf halogen free 11 part numbering system for 2410 very fast-acting fuses 2410 sf v 6.30 fm / 125 -2 packaging -2 = tape and reel voltage rating 125 = 125v dc special code f = rohs compliant m = marked part rated current 6.30= 6.30 amps fuse blow type v = very fast acting sf = surface mount fuse size (0.24*0.10 inch) warning : all information, including illustrations, is believed to be accurate and reliable. users, however, should independently evaluate the suitability of and test each product selected for their application. tyco electronics corporation and/or its affiliates in the te connectivity ltd. family of companies (te) makes no warranties as to the accuracy or completeness of the information, and disclaims any liability regarding its use.tes only obligations are those in the te standard terms and conditions of sale for this product, and in no case will te be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use, or misuse of the product. specifications are subject to change without notice. in addition, te reserves the right to make changes to materials or processing that do not affect compliance with any applicable specification without notification to buyer.
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