revised: january 7, 2009 313 axial lead & cartridge fuses " ( ' b t u " d u j o h 4 f s j f t 312/318 series ? 2009 littelfuse, inc. speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312/318 series 312/318 series lead-free 3ag, fast-acting fuse the 3ag fast-acting fuse solves a broad range of application requirements while offering reliable performance and cost-effective circuit protection. agency approvals agency agency file number ampere range e10480 au1410 312 series: 10ma - 10a/ 318 series: 31ma - 10a 312 series: 12a - 30a lr 29862 312 series: 10ma - 30a 318 series: 31ma - 10a ps e nbk040205- e10480b/f 312/318 series: 1a - 10a e10480 318 series: 12a - 30a su05001- 5005/5006/6005/6008 312/318 series: 1a/ 1.25a / 1.6a/ 2a - 10a 312 series: 10ma - 10a 318 series: 31ma - 10a features electrical characteristics for series applications % of ampere rating ampere rating opening time 100% 10ma C 35a 4 hours, minimum 135% 10ma C 35a 1 hour, maximum 200% 10ma C 10a 5 sec., maximum 12a C 30a 10 sec., maximum 35a 20 sec., maximum t * o b d d p s e b o d f x j u i 6 - standard 248-14 t " w b j m b c m f j o d b s u s j e h f and axial lead format and with various forming dimensions t 3 p ) 4 d p n q m j b o u b o e lead-free (except 10ma and 31ma rated items) used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. ps e description
revised: january 7, 2009 introduction to circuit protection introduction to circuit protection transientology 314 axial lead & cartridge fuses " ( ' b t u " d u j o h 4 f s j f t 312/318 series ? 2009 littelfuse, inc. speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. amp code ampere rating (a) voltage rating (v) interrupting rating nominal cold resistance (ohms) nominal melting i 2 t (a 2 sec) agency approvals ps e .10 * 0.01 250 35a@250vac 10ka@125vac 177.4000 na x x x ** .031 * 0.031 250 23.6500 0. 0000300 x x x .062 0.062 250 24.7000 0.000249 x x x .100 0.1 250 11.2800 0.00102 x x x .125 0.125 250 7.1450 0.00289 x x x .150 0.15 250 5.1300 0.00550 x x x .175 0.175 250 3.8750 0.00960 x x x .187 0.187 250 3.4200 0.0128 x x x .200 0.2 250 3.0200 0.0165 x x x .250 0.25 250 2.0100 0.0355 x x x .300 0.3 250 1.4050 0.0689 x x x .375 0.375 250 0.8250 0.185 x x x .500 0.5 250 0.4980 0.483 x x x .600 .6 250 0.3620 0.880 x x x .750 0.75 250 0.2445 1.84 x x x 001.1250 0.19000.760x xxxx 1.25 1.25 250 100a@250vac 10ka@125vac 0.1385 1.45 x x x x x 01.5 1.5 250 0.1036 2.35 x x x x 01.6 1.6 250 0.0934 2.80 x xxxx 1.75 1.75 250 0.0856 3.60 x x x x 01.8 1.8 250 0.0825 3.85 x x x x 002. 2 250 0.0704 5.20 x xxxx 2.25 2.25 250 0.0594 7.20 x xxxx 02.5 2.5 250 0.0513 9.54 x xxxx 003. 3 250 0.0427 14.0 x xxxx 004. 4 250 200a@250vac 10ka@125vac 0.0293 28.5 x xxxx 005. 5 250 0.0224 50.0 x xxxx 006.6250 0.0178118.0x xxxx 007.7250 0.0146118.0x xxxx 008. 8 250 0.0122 166.0 x xxxx 010. 10 250 0.0093 298.0 x xxxx 012. * 12 32 300a@32 vac 0.0072 234.6 x x ** x 015. * 15 32 0.0052 490.5 x x ** x 020. * 20 32 0.0035 1029 x x ** x 025. * 25 32 0.0024 2041 x x ** x 030. * 30 32 0.0019 3717 x x ** x 035. 35 32 0.0013 7531 notes: * 10ma and 31ma are not rohs compolaint as the glass bead contains pb. ** for 318 series 12a to 30a, the agency approval is only curus. electrical characteristic speci?cations by item
revised: january 7, 2009 315 axial lead & cartridge fuses " ( ' b t u " d u j o h 4 f s j f t 312/318 series ? 2009 littelfuse, inc. speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312/318 series average time current curves 1000 100 10 1 0.1 0.01 1 10 100 0.01 0.1 .031 a .062 a .125 a .250 a .375 a .500 a .750 a 1 a 1.5 a 2 a 2.5 a 3 a 4 a 5 a 6 a 7 a 8 a 10 a 0.00 5 time in seconds current in amperes temperature rerating curve soldering parameters - wave soldering dwell t ime 0 20 4 0 60 80 100 120 1 4 0 160 180 200 220 2 4 0 260 280 300 0 10 20 30 4 0 5 0 60 70 80 90 100 110 120 130 1 4 0 1 5 0 160 170 180 190 200 210 220 230 2 4 0 t ime (seconds) t emperature (c) - measured on bottom side of board cooling t ime preheat t ime wave parameter lead-free recommendation preheat: (depends on flux activation temperature) (typical industry recommendation) temperature minimum: 100 c temperature maximum: 150 c preheat time: 60-180 seconds solder pot temperature: 260 c maximum solder dwell time: 2-5 seconds recommended hand-solder parameters: solder iron temperature: 350 c +/- 5c heating time: 5 seconds max. note: these devices are not recommended for ir or convection re?ow process. recommended process parameters: please contact littelfuse for more details on those t-c curves of other ampere ratings which are not published.
revised: january 7, 2009 introduction to circuit protection introduction to circuit protection transientology 316 axial lead & cartridge fuses " ( ' b t u " d u j o h 4 f s j f t 312/318 series ? 2009 littelfuse, inc. speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312 series 318 series 6.35 (.25") 32.72 (1.288") 31.75 (1.25") 6.985 (.275") 0.813 (.032") 39.68 (1.56") typ. standard length 12.70 (0.50) typ short lead option axial lead material: tin coated copper product characteristics dimensions packaging packaging option quantity quantity & packaging code 312 series (cartridge type) bulk 5 vx bulk 100 hx bulk 1000 mx bulk 1000 mxcc bulk 100 hxcc 318 series (axial leaded) bulk 5 vx bulk 100 hx bulk 1000 mx bulk 1000 mxsl bulk 1000 mxb materials body: glass cap: nickelCplated brass leads: tinCplated copper terminal strength mil-std-202g, method 211a, test condition a solderability reference iec 60127 second edition 2003-01 annex a product marking cap1: brand logo, current and voltage ratings cap2: series and agency approval marks operating temperature C55oc to +125oc thermal shock mil-std-202g, method 107g, test condition b: (5 cycles -65c to +125c) vibration mil-std-202g, method 201 a humidity mil-std-202g, method 103b, test condition a: high rh (95%), and elevated temperature (40c) for 240 hours salt spray mil-std-202g, method 101d, test condition b part numbering system 0312 m x p xxxx lead-free packaging code quantity code amp code series x = filler m = 1000 refer to amp code column of electrical characteristics table measurements displayed in millimeters (inches)
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