thin-film surface mount 366 surface mount fuses slimline 1206 very fast-acting fuse 433 series www.littelfuse.com ?for new designs of 7 amp please consult 429 series. ?the slimline 1206 fuse is an extremely small, low profile design (1206 chip size) utilizing thin-film technology to achieve precise control of electrical characteristics. ?the lower height profile produces a flat surface for improved performance in pick-and-place operations and an alternate solution for height critical application. ?mounting pad and electrical specification are identical to the popular 429 series specifications. electrical characteristics: % of ampere opening rating time at 25 c 100% 4 hours, min imum 200% 5 seconds, max imum 300% 0.2 seconds, max imum agency approvals: recognized under the components program of underwriters laboratories and certified by csa. agency file numbers: ul e10480, csa lr 29862. interrupting ratings: 0.125 ?.375a 50 a @ 125 v ac/dc 0.5 ?2a 50 a @ 63 v ac/dc 2.5 ?3a 50 a @ 32 v ac/dc 4 ?5a 50 a @ 24 v ac/dc environmental specifications: operating temperature: 55? to 90?. consult temperature rerating chart on page 4. vibration: per mil-std-202f. insulation resistance (after opening): greater than 10,000 ohms. resistance to soldering heat: withstands 60 seconds above 200? up to 260?, maximum. shelf life (solderability): 1 year min. thermal shock: withstands 5 cycles of 55 to 125?. physical specifications: materials: body: epoxy substrate terminations: copper/nickel/tin-lead (95/5) cover coat: conformal coating soldering parameters(refer to page 5 for soldering profile): wave solder ?260?, 10 seconds maximum infrared solder ?260?, 30 seconds maximum packaging specifications: 8mm tape and reel per eia-rs481-1 (iec 286, part 3); 5,000 per reel, add packaging suffix, nr. patented ordering information: 2.03 (.080") 2.03 (.080") wave solder reflow solder 3.81 (.150") 1.27 (.050") .58 (.023") .56 (.022") .66 (.026") 1.14 (.045") marking code varies with amperage rating (see chart) 1.52 (.060") 3.18 (.125") 3.18 (.125") 4.83 (.190") 1.65 (.065") 1.52 (.060") sn/pb sn/pb sn/pb cu coating reference dimensions: time in seconds current in amperes 0.01 0.1 0.1 1 1 10 100 10 100 0.001 3a 2.5a 2a 1.75a 1.5a 1.25a 1a .8a .75a .6a .5a .375a .25a .200a .125a 4a 5a average time current curves nominal catalog ampere marking voltage resistance melting i 2 t number rating code rating cold ohms 1 (a 2 sec.) 2 0433 .125 .125 b 125 3.45 0.00040 0433 .200 .200 c 125 0.938 0.00055 0433 .250 .250 d 125 0.625 0.0010 0433 .375 .375 e 125 0.375 0.0028 0433 .500 .50 f 63 0.2405 0.0060 0433 .600 .60 .6 63 0.2100 0.0131 0433 .750 .75 g 63 0.1370 0.0170 0433 .800 .80 .8 63 0.1225 0.0305 0433 001. 1.0 h 63 0.09950 0.0350 0433 1.25 1.25 j 63 0.07475 0.0650 0433 01.5 1.5 k 63 0.06250 0.125 0433 1.75 1.75 l 63 0.05000 0.150 0433 002. 2.0 n 63 0.03975 0.230 0433 02.5 2.5 o 32 0.03065 0.50 0433 003. 3.0 p 32 0.02625 0.70 0433 004. 4.0 s 24 0.014 1.024 0433 005. 5.0 t 24 0.011 1.600 1 measured at 10% of rated current, 25?. 2 measured at rated voltage.
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