315 axial lead & cartridge fuses 3ag > fast acting > 312/318 series 312/318 series ? 2009 littelfuse, inc. specifications are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312/318 series 312/318 series lead-free 3ag, fast-acting fuse the 3ag fast-acting fuse solves a broad range of application requirements while offering reliable performance and cost-effective circuit protection. agency approvals agency agency file number ampere range e10480 au1410 312 series: 62ma - 10a 318 series: 62ma - 10a 312 series: 12a - 30a lr 29862 312 series: 62ma - 30a 318 series: 62ma - 10a ps e nbk040205- e10480b/f 312/318 series: 1a - 10a e10480 318 series: 12a - 30a su05001- 5005/5006/6005/6008 312/318 series: 1a/ 1.25a / 1.6a/ 2a - 10a 312 series: 62ma - 10a 318 series: 62ma - 10a features electrical characteristics for series applications % of ampere rating ampere rating opening time 100% 62ma C 35a 4 hours, minimum 135% 62ma C 35a 1 hour, maximum 200% 10ma C 10a 5 sec., maximum 12a C 30a 10 sec., maximum 35a 20 sec., maximum t * o b d d p s e b o d f x j u i 6 - standard 248-14 t " w b j m b c m f j o d b s u s j e h f and axial lead format and with various forming dimensions t 3 p ) 4 d p n q m j b o u b o e lead-free used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. ps e description revised: june 29, 2011
introduction to circuit protection introduction to circuit protection transientology 316 axial lead & cartridge fuses 3ag > fast acting > 312/318 series 312/318 series ? 2009 littelfuse, inc. specifications are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. amp code ampere rating (a) voltage rating (v) interrupting rating nominal cold resistance (ohms) nominal melting i 2 t (a 2 sec) agency approvals ps e .062 0.062 250 35a@250vac 10ka@125vac 24.7000 0.000249 x x x .100 0.1 250 11.2800 0.00102 x x x .125 0.125 250 7.1450 0.00289 x x x .150 0.15 250 5.1300 0.00550 x x x .175 0.175 250 3.8750 0.00960 x x x .187 0.187 250 3.4200 0.0128 x x x .200 0.2 250 3.0200 0.0165 x x x .250 0.25 250 2.0100 0.0355 x x x .300 0.3 250 1.4050 0.0689 x x x .375 0.375 250 0.8250 0.185 x x x .500 0.5 250 0.4980 0.483 x x x .600 .6 250 0.3620 0.880 x x x .750 0.75 250 0.2445 1.84 x x x 001.1250 0.19000.760x xxxx 1.25 1.25 250 100a@250vac 10ka@125vac 0.13851.45 x xxxx 01.5 1.5 250 0.1036 2.35 x x x x 01.6 1.6 250 0.0934 2.80 x xxxx 1.75 1.75 250 0.0856 3.60 x x x x 01.8 1.8 250 0.0825 3.85 x x x x 002. 2 250 0.0704 5.20 x xxxx 2.25 2.25 250 0.0594 7.20 x xxxx 02.5 2.5 250 0.0513 9.54 x xxxx 003. 3 250 0.0427 14.0 x xxxx 004. 4 250 200a@250vac 10ka@125vac 0.0293 28.5 x xxxx 005. 5 250 0.0224 50.0 x xxxx 006.6250 0.0178118.0x xxxx 007.7250 0.0146118.0x xxxx 008. 8 250 0.0122 166.0 x xxxx 010. 10 250 0.0093 298.0 x xxxx 012. * 12 32 300a@32 vac 0.0072 234.6 x x ** x 015. * 15 32 0.0052 490.5 x x ** x 020. * 20 32 0.0035 1029 x x ** x 025. * 25 32 0.0024 2041 x x ** x 030. * 30 32 0.0019 3717 x x ** x 035. 35 32 0.0013 7531 notes: ** for 318 series 12a to 30a, the agency approval is only curus. electrical characteristic specifications by item
317 axial lead & cartridge fuses 3ag > fast acting > 312/318 series 312/318 series ? 2009 littelfuse, inc. specifications are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312/318 series average time current curves 1000 100 10 1 0.1 0.01 1 10 100 0.01 0.1 .062 a .125 a .250 a .375 a .500 a .750 a 1 a 1.5 a 2 a 2.5 a 3 a 4 a 5 a 6 a 7 a 8 a 10 a 0.005 time in seconds current in amperes temperature rerating curve soldering parameters - wave soldering dwell t ime 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 0 10 20 30 40 5 0 60 70 80 90 100 110 120 130 140 1 5 0 160 170 180 190 200 210 220 230 240 t ime (seconds) t emperature (c) - measured on bottom side of board cooling t ime preheat t ime wave parameter lead-free recommendation preheat: (depends on flux activation temperature) 5 z q j d b m * o e v t u s z 3 f d p n n f o e b u j p o
temperature minimum: 100 c temperature maximum: 150 c preheat time: 60-180 seconds solder pot temperature: 260 c maximum solder dwell time: 2-5 seconds recommended hand-solder parameters: 4 p m e f s * s p o 5 f n q f s b u v s f ? $ ? $ ) f b u j o h 5 j n f t f d p o e t n b y note: these devices are not recommended for ir or convection reflow process. recommended process parameters: please contact littelfuse for more details on those t-c curves of other ampere ratings which are not published.
introduction to circuit protection introduction to circuit protection transientology 318 axial lead & cartridge fuses 3ag > fast acting > 312/318 series 312/318 series ? 2009 littelfuse, inc. specifications are subject to change without notice. please refer to www.littelfuse.com/series/312.html or /318.html for current information. 312 series 318 series 6.35 (.25") 32.72 (1.288") 31.75 (1.25") 6.985 (.275") 0.813 (.032") 39.68 (1.56") typ. standard length 12.70 (0.50) typ short lead option axial lead material: tin coated copper product characteristics dimensions packaging materials body: glass cap: nickelCplated brass leads: tinCplated copper terminal strength . * - 4 5 % (
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test condition a solderability 3 f g f s f o d f * & $ 4 f d p o e & e j u j p o 2003-01 annex a product marking cap1: brand logo, current and voltage ratings cap2: series and agency approval marks operating temperature o ? $ u p ? $ thermal shock . * - 4 5 % (
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test condition b part numbering system 0312 m x p xxxx lead-free packaging code quantity code amp code series x = filler m = 1000 refer to amp code column of electrical characteristics table measurements displayed in millimeters (inches) packaging option packaging specification quantity quantity & packaging code taping width 312 series bulk n/a 1000 mx n/a bulk n/a 100 ) 9 n/a 318 series bulk n/a 1000 mx n/a bulk n/a 100 ) 9 n/a bulk n/a 1000 mxb n/a
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