surface mount fuses thin-film surface mount slim 1206 very fast-acting thin-film type 433 series ?the slim 1206 is an extremely small, low profile design (1206 chip size) utilizing thin-film technology to achieve precise control of electrical characteristics. ?one-piece element/termination design assures extra reliability by eliminating the need for soldering, welding or other joining operations in the manufacture of the fuse. ?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: 0.25 ?.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 environmental specifications: operating temperature: 55? to 125?. 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: wave solder ?260?, 10 seconds maximum infrared solder ?260?, 30 seconds maximum packaging specifications: 8mm tape and reel per eia-rs481-2 (iec 286, part 3); 5,000 per reel, add packaging suffix, nr. patents: patent pending ordering information: nominal nominal catalog ampere marking voltage resistance voltage drop melting i 2 t number rating code rating cold ohms 1 (v) 2 (a 2 sec.) 3 0433 .250 1/4 ld 125 0.62500 0.160 0.00100 0433 .375 3/8 le 125 0.37500 0.138 0.00280 0433 .500 1/2 lf 63 0.24050 0.130 0.0060 0433 .750 3/4 lg 63 0.13700 0.120 0.0170 0433 001. 1 lh 63 0.09950 0.115 0.035 0433 1.25 1 1 / 4 lj 63 0.07475 0.108 0.065 0433 01.5 1 1 / 2 lk 63 0.06250 0.101 0.125 0433 1.75 1 3 / 4 ll 63 0.05000 0.096 0.150 0433 002. 2 ln 63 0.03975 0.093 0.230 0433 02.5 2 1 / 2 lo 32 0.03065 0.087 0.50 0433 003. 3 lp 32 0.02625 0.080 0.70 1 measured at 10% of rated current, 25?. 2 measured at 100% of rated current, 25?. 3 measured at rated voltage. 0.001 0.01 0.1 1 0.1 1 10 100 .25a .375a .5a .75a 1a 1.5a 1.75a 2a 2.5a 3a time in seconds current in amperes 2.03 (0.080") 2.03 (0.080") wave solder reflow solder 3.81 (0.150") 1.52 (0.060") .58 (0.023") .56 (0.022") .64 (0.025") (4) 1.14 (0.045") marking code varies with amperage rating (see chart) sn /pb sn /pb 1.27 (0.050") 1.52 (0.060") 3.18 (0.125") 3.18 (0.125") 4.83 (0.190") 1.65 (0.065") 1.52 (0.060") average time current curves reference dimensions:
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