107 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 459 series pico ? smf fuse > 459 series please refer to www.littelfuse.com/series/459.html for current information. 459 series 459 series pico ? very fast-acting surface mount fuse description agency approvals electrical characteristics for series features % of ampere rating opening time 100% 4 hours, minimum 200% 1 second, maximum 300% 0.1 second, maximum agency agency file number ampere range e10480 62ma - 5a lr29862 62ma - 5a electrical specifications by item ampere rating (a) amp code max voltage rating (v) interrupting rating nominal cold resistance (ohms) nominal melting i 2 t (a 2 sec) agency approvals 0.062 .062 125 50 a @125 vac 300 a @125 vdc 7.0000 0.000075 x x 0.125 .125 125 1.7000 0.00163 x x 0.250 .250 125 0.6650 0.0106 x x 0.375 .375 125 0.3950 0.0254 x x 0.500 .500 125 0.2800 0.0546 x x 0.750 .750 125 0.1750 0.155 x x 1.00 001. 125 0.1250 0.281 x x 1.50 01.5 125 0.0800 0.650 x x 2.00 002. 125 0.0468 0.421 x x 2.50 02.5 125 0.0350 0.721 x x 3.00 003. 125 0.0290 1.23 x x 3.50 03.5 125 0.0240 1.65 x x 4.00 004. 125 0.0200 2.35 x x 5.00 005. 125 0.0155 3.90 x x the 459 series very fast-acting smf is based on littelfuse pico ? fuse technology, though offered in a surface mount package. this series of devices meets the requirements of the rohs directive. applications t 7 f s z ' b t u " d u j o h t 8 j e f d v s s f o u s b u j o h s b o h f n " u p " t 8 j e f p q f s b u j o h u f n q f s b u v s f s b o h f t - p x u f n q f s b u v s f s f s b u j o h t 3 p ) 4 d p n q m j b o u t 8 j s f m f t t c b t f t u b u j p o t / f u x p s l f r v j q n f o u t 5 f m f d p n f r v j q n f o u revised: august 4, 2009
introduction to circuit protection introduction to circuit protection transientology 108 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 459 series pico ? smf fuse > 459 series please refer to www.littelfuse.com/series/459.html for current information. average time current curves 100 10 1 0.1 0.01 0.001 .062a 0.05 0.1 1 10 100 .125a .25a .375a .500a .750a 1a 1.5a 2a 2.5a 3a 3.5a 4a 5a time in seconds current in amperes soldering parameters temperature rerating curve / p u f 1. rerating depicted in this curve is in addition to the standard rerating of 25% for continuous operation. wave soldering 260c, 10 seconds max. reflow soldering 260c, 30 seconds max.
109 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 459 series pico ? smf fuse > 459 series please refer to www.littelfuse.com/series/459.html for current information. 459 series materials body: molded thermoplastic terminations: 100% tin-plated copper (459 series) solderability mil-std-202, method 208 product marking body: brand logo, current rating, voltage rating, series code, date code, agency approved logo moisture sensitivity level level 1 j-std - 020c product characteristics operating temperature C55 o c to 125 o c shock mil-std-202, method 213, test condition i (100 gs peak for 6 msecs.) vibration mil-std-202, method 201 (10C55 hz, 0.06 inch total excursion) salt spray mil-std-202, method 101, test condition b (48 hours) insulation resistance (after opening) mil-std-202, method 302, (10,000 ohms minimum at 100 volts) 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) 4.32 (.170") 5 a 1 2 5 v l f 4 5 9 b 3 ? ? 3.0 5 (.120") 2.97 (.117") 7.24(.28 5 ") ref. 8.26 (.32 5 ") 1.6 5 (.06 5 ") 4.9 5 (.19 5 ") 1.30(.0 5 1") ref. 2.03 (.080") recommended pad layout dimensions packaging part numbering system packaging option packaging specification quantity quantity & packaging code 12mm tape and reel eia rs-481-1 (iec 286, part 3) 500 ur 12mm tape and reel eia rs-481-1 (iec 286, part 3) 2500 er 0459 .500 ur series amp code quantity code packaging code refer to electrical characteristics table ur = 500 pcs er = 2500 pcs r = tape and reel example: 0.62 amp product is 0459 .062 ur (.5 amp q s p e v d u t i p x o b c p w f
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