34 surface mount fuses subminiature surface mount nano 2? smf very fast-acting type fuse the nano 2 smf fuse is a very small, square surface mount fuse that is also available in a surface mount holder. electrical characteristics: % of ampere ampere opening rating rating time 100% 1/16 C15 4 hours, min imum 200% 1/16 C10 5 seconds, max imum 12C15 20 seconds, max imum agency approvals: recognized under the components program of underwriters laboratories and certified by csa. approved by miti from 1 through 5 amperes. agency file numbers: ul e10480, csa lr 29862. interrupting ratings: 1/16 C 8a 50 amperes at 125 vac/vdc 300 amperes at 32 vdc 10a 35 amperes at 125 vac/50 amperes at 125 vdc 300 amperes at 32 vdc 12a C 15a 50 amperes at 65 vac/vdc 300 amperes at 24 vdc environmental specifications: operating temperature: C55c to 125c. shock: mil-std-202, method 213, test condition i (100 gs peak for 6 milliseconds). vibration: mil-std-202, method 201 (10C55 hz). salt spray: mil-std-202, method 101, test condition b. insulation resistance (after opening): mil-std-202, method 302, test condition a, (10,000 ohms minimum). resistance to soldering heat: mil-std-202, method 210, test condition f (20 sec. at 260c). thermal shock: mil-std-202, method 107, test condition b (C65 to 125c). moisture resistance: mil-std-202, method 106, high humidity (90-98 rh), heat (65c). physical specifications: materials: body: ceramic terminations: tin-lead alloy or silver plated brass caps. soldering parameters: wave solder 260c, 10 seconds maximum reflow solder 260c, 30 seconds maximum solderability: mil-std-202, method 208. packaging specifications: 12mm tape and reel per eia-rs481 (iec 286, part 3); 1,000 per reel, add packaging suffix, mr. patented ordering information: 100 10 1 0.1 0.01 0.001 1/16a 1/8a 1/4a 3/8a 1/2a 3/4a 1a 1 1/2a 2a 2 1/2a 3a 3 1/2a 4a 5a 7a 10a 12a 15a 0.05 0.1 1 10 100 1000 time in seconds current in amperes refer to pg. 102 for smf omni-blok ? holder, series 154 000. average time current curves l f 7 a 6.86 (.270") 3.15 (.124") 2.95 (.116") 1.96 (.077") 2.69 (.106") 2.69 (.106") 1.45 (.057") 6.10 (.240") note: metric dimensions shown. inch dimensions are in parentheses. recommended pad layout tin-lead silver nominal nominal plated plated ampere voltage resistance melting i 2 t catalog # catalog # rating rating cold ohms a 2 sec. C r451 .062 1/16 125 5.50 0.00019 C r451 .125 1/8 125 1.70 0.00286 r451 .250 0453 .250 1/4 125 1.05 0.01126 r451 .375 0453 .375 3/8 125 0.610 0.0425 r451 .500 0453 .500 1/2 125 0.420 0.0795 r451 .750 0453 .750 3/4 125 0.245 0.185 r451 001. 0453 001. 1 125 0.153 0.459 r451 01.5 0453 01.5 1 1 / 2 125 0.0630 0.853 r451 002. 0453 002. 2 125 0.0367 0.53 r451 02.5 0453 02.5 2 1 / 2 125 0.0286 1.029 r451 003. 0453 003. 3 125 0.0227 1.65 r451 03.5 0453 03.5 3 1 / 2 125 0.0200 2.469 r451 004. 0453 004. 4 125 0.0160 3.152 r451 005. 0453 005. 5 125 0.0125 5.566 r451 007. 0453 007. 7 125 0.0090 10.32 r451 010. 0453 010. 10 125 0.0056 26.46 r451 012. 0453 012. 12 65 0.0049 47.97 r451 015. 0453 015. 15 65 0.0037 97.82
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