subminiature axial lead and cartridge fuses pico ii slo-blo fuse 473 series 391 www.littelfuse.com the pico ii slo-blo fuse combines time delay performance characteristics with the proven reliability of a pico fuse. ? rohs compliant version now available, use ordering suffix ? (see example on data sheet). electrical characteristics: % of ampere opening rating time 100% 4 hours, min imum 200% 1 second, min.; 60 seconds, max. 300% 0.2 second, min.; 3 seconds, max. 800% 0.02 second, min.; 0.1 second, max . agency approvals: recognized under the components program of underwriters laboratories and certified by csa. approved by meti from 1 through 5 amperes. agency file numbers: ul e10480, csa lr 29862. interrupting rating: 50 amperes at 125 vdc/vac environmental specifications: operating temperature: ?5? to 125?. shock: mil-std-202, method 213, test condition i (100 g s peak for 6 milliseconds). vibration: mil-std-202, method 201 (10?5 hz); mil-std-202, method 204, test condition c (55?000 hz at 10 g s peak). salt spray: mil-std-202, method 101, test condition b. insulation resistance (after opening): mil-std-202, method 302, (10,000 ohms minimum at 100 volts). resistance to soldering heat: mil-std-202, method 210, test condition c (20 sec at 260?). thermal shock: mil-std-202, method 107, test condition b (?5? to 125?). moisture resistance: mil-std-202, method 106 (90?8% rh), heat (65?). physical specifications: materials: encapsulated, epoxy-coated body; solder coated copper wire leads. rohs compliant product: pure tin coated copper wire leads. soldering parameters: wave solder ?260?, 3 seconds maximum. solderability: mil-std-202, method 208. lead pull force: mil-std-202, method 211, test condition a (will withstand a 10 lb. axial pull test). patented ordering information: 1000 100 10 1 0.1 0.01 1000 100 10 1 0.1 .375a .50a .75a 1.0a 1.5a 2.0a 2.5a 3.0a 3.5a 4.0a 5.0a 7.0a time in seconds current in amperes nominal nominal catalog ampere voltage resistance melting i 2 t number rating rating cold ohms a 2 sec. 0473 .375 3/8 125 1.74 0.0850 0473 .500 1/2 125 1.13 0.210 0473 .750 3/4 125 0.460 0.760 0473 001 1 125 0.267 2.01 0473 01.5 1 1 / 2 125 0.116 3.94 0473 002 2 125 0.0712 7.60 0473 2.25 2 1 / 4 125 0.0630 9.28 0473 02.5 2 1 / 2 125 0.0520 13.0 0473 003 3 125 0.0380 21.0 0473 03.5 3 1 / 2 125 0.0240 26.8 0473 004 4 125 0.0194 35.0 0473 005 5 125 0.0133 54.8 0473 007 7 125 0.0092 105.0 average time current curves f l 1 a 38.1 (1.5") 38.1 (1.5") 7.11 (.280") ref. 0.64 (.025") dia. 3.175 (.125") dia. ref. packaging specifications: tape and reel per eia-296; t1: 2.062" (52.4mm) taped spacing; 4,000 per reel. options: for rohs compliant devices add the letter ? to end of packaging suffix. example: 473001.yrt1l (rohs compliant 1a, 4,000 per reel). rohs 11 axial lead and cartridge fuses
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