34 surface mount fuses thin-film surface mount slimline 0603 very fast-acting thin-film type 434 series the slimline 0603 is an extremely small, low profile design (0603 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 applications. mounting pad and electrical specifiation are identical to the popular 431 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: .25 1a 50 a @ 32 v ac/dc 1.25 5a 35 a @ 32 v ac/dc environmental specifications: operating temperature: 55 c to 90 c. consult tempera- ture rerating chart on page 4. for operation above 90 c contact littelfuse. vibration: per mil-std-202f. insulation resistance (after opening): greater than 10,000 ohms. resistance to soldering heat: withstands 60 seconds above 200 c up to 260 c, maximum. shelf life (solderability): 1 year min. thermal shock: withstands 5 cycles of 55 c to 125 c. physical specifications: materials: body: epoxy substrate terminations: copper/nickel/tin-lead (95/5) cover coat: conformal coating soldering parameters: wave solder 260 c, 10 seconds maximum infrared solder 260 c, 30 seconds maximum packaging specifications: 8mm tape and reel per eia-rs481 (iec 286, part 3); 5,000 per reel, add packaging suffix, nr. patents: patent pending ordering information: nominal catalog ampere marking voltage resistance melting i 2 t number rating code rating cold ohm 1 (a 2 sec.) 0434 .250 .25 d 32 0.375 0.0030 0434 .375 .375 e 32 0.265 0.0053 0434 .500 .5 f 32 0.193 0.0087 0434 .750 .75 g 32 0.114 0.0171 0434 001. 1 h 32 0.072 0.0210 0434 1.25 1.25 j 32 0.054 0.0320 0434 01.5 1.5 k 32 0.048 0.0526 0434 1.75 1.75 l 32 0.039 0.0661 0434 002. 2 n 32 0.036 0.104 0434 02.5 2.5 o 32 0.028 0.175 0434 003. 3 p 32 0.023 0.198 0434 03.5 3.5 r 32 0.019 0.265 0434 004. 4 s 32 0.017 0.352 0434 005. 5 t 32 0.013 1.297 1 measured at 10% of rated current, 25 c. 2 measured at rated voltage. time in seconds current in amperes 0.01 0.1 0.1 1 1 10 100 10 100 0.001 3a 2.5a 2a 1.5a 1a .75a .5a .375a .25a 3.5a 4a 5a 1.09 (.043") reflow solder 1.60 (.063") .305 (.012") .279 (.011") .18 (.007") .127 (.005") marking code varies with amperage rating (see chart) sn /pb sn /pb r ref. .813 (.032") 1.02 (.040") .762 (.030") 2.54 (.100") 1.09 (.043") wave solder 4.83 (.190") 1.09 (.043") 1.02 (.040") reference dimensions: average time current curves
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