321 ? 2009 littelfuse, inc. speci?cations are subject to change without notice. axial lead & cartridge fuses 314/324 series 3ab > fast acting > 314/324 series please refer to www.littelfuse.com/series/314.html or /324.html for current information. 314/324 series the 3ab fast-acting fuse with ceramic body construction permits higher interrupting ratings and voltage ratings. ideal for applications where high current loads are expected. agency approvals agency agency file number ampere range e10480 125ma - 15a lr 29862 125ma - 20a e10480 15a* - 40a ps e nbk 030805 - e10480a-f nbk 260106 - jp1021a/b 125ma - 30a su05001 - 6001/6002/6003/7006 125ma - 30 a 125ma - 30a features electrical characteristics for series applications % of ampere rating ampere rating opening time 100% 125ma C 30a 4 hours, minimum 135% 125ma C 30a 1 sec.., maximum 200% 125ma C 12a 15 sec., maximum 15a C 30a 30 sec., maximum electrical characteristic speci?cation by item 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 .125 0.125 250 35a@250vac 10ka@125vac 10ka@125vdc 6.20 0.00149 xx x .250 0.25 250 1.95 0.0140 xx x .375 0.375 250 0.820 0.050 xx x .500 0.5 250 0.500 0.115 xx x .750 0.75 250 0.250 0.466 xx x 001. 1 250 100a@250vac 10ka@125vac 10ka@125vdc 0.189 0.690 xx xx 002. 2 250 0.0700 11.0 xx xx 003. 3 250 0.0432 14.6 x x x x x 004. 4 250 750a@250vac 10ka@125vac 10ka@125vdc 0.0470 10.4 x x x x x 005. 5 250 0.0300 26.0 x x x x x 006. 6 250 0.0240 45.0 x x x x x 007. 7 250 0.0187 71.0 x x x x x 008. 8 250 0.0153 105 x x x x x 010. 10 250 0.0105 206 x x x x x 012. 12 250 0.00760 570 xx xx 015. 15 250 0.00505 292 xx xx 015.* 15 280 0.00505 292 xx 020. 20 250 1000a@250vac 200a@300vac 10ka@125vac 10ka@125vdc 0.00355 631 x x x x 020.* 20 280 0.00355 631 x x 025. 25 250 100a@250vac 1000@75vdc 400@125vac 400a@125vdc 0.00235 1450 x x x x 025.** 25 280 0.00235 1450 x x 030. 30 250 0.00182 2490 xxxx 040. 40 250 1000a@250vac 400a@150vdc 0.0014 22925 x x 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. 314/324 series lead-free 3ab, fast-acting fuse ps e * 350a@280vac interrupting rating available for 15a and 20a. ** 50a@280vac for 25a. add suf?x 280. example: 0324020.mx280p. description revised: july 15, 2009
introduction to circuit protection introduction to circuit protection transientology 322 ? 2009 littelfuse, inc. speci?cations are subject to change without notice. axial lead & cartridge fuses 314/324 series 3ab > fast acting > 314/324 series please refer to www.littelfuse.com/series/314.html or /324.html for current information. average time current curves 1000 100 10 1 0.1 0.01 0.1 1 10 100 1000 1/8a 1/4a 3/8a 1/2a 3/4a 1a 2a 3a 4a 5a 6a 7a 8a 10a 12a 15a 20a 25a 30a 40a time in seconds current in amperes temperature rerating curve soldering parameters - wave soldering dwell t ime 0 20 4 0 60 80 100 120 1 4 0 160 180 200 220 2 4 0 260 280 300 0 10 20 30 4 0 50 60 70 80 90 100 110 120 130 1 4 0 150 160 170 180 190 200 210 220 230 2 4 0 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) (typical industry recommendation) 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: solder iron temperature: 350 c +/- 5c ) 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 re?ow process. recommended process parameters:
323 ? 2009 littelfuse, inc. speci?cations are subject to change without notice. axial lead & cartridge fuses 314/324 series 3ab > fast acting > 314/324 series please refer to www.littelfuse.com/series/314.html or /324.html for current information. 314/324 series product characteristics dimensions packaging 31 4 000p series 32 4 000p series 6.35 (.25") 32.72 (1.288") 31.75 (1.25") 6.985 (.275") 38.1 (1.50") typ. axial lead material: tin coated copper. 0.813 (.032") ( - 15a) 1.016 (.040") (20 - 30a) 1 8 / packaging option packaging speci?cation quantity quantity & packaging code reel size 314 series bulk n/a 5 vx n/a bulk n/a 100 ) 9 n/a bulk n/a 1000 mx n/a bulk n/a 1000 mx52l n/a bulk n/a 1000 mxcc n/a bulk n/a 1000 mx52le n/a 324 series bulk n/a 5 vx n/a bulk n/a 100 ) 9 n/a bulk n/a 1000 mx n/a bulk n/a 1000 mx280 n/a bulk n/a 1000 mx52 n/a bulk n/a 1000 mxf24 n/a materials body: ceramic cap: nickelCplated brass leads: tinCplated copper terminal strength mil-std-202g, method 211a, test condition a solderability reference iec 60127 second edition 2003-01 annex a product marking cap1: brand logo, current and voltage ratings cap2: series and agency approval marks operating temperature C55oc to +125oc thermal shock mil-std-202g, method 107g, test condition b: (5 cycles -65c to +125c) vibration mil-std-202g, method 201 a humidity mil-std-202g, method 103b, test $ p o e j u j p o " ) j h i 3 )
b o e & m f w b u f e temperature (40c) for 240 hours salt spray mil- std-202g, method 101d, test condition b part numbering system 0314 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
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