7 surface mount fuses 277 surface mount fuses www.littelfuse.com 350 volt surface mount fuse ebf fuse fast-acting type 446/447 series ideal for use in electronic lighting ballast, power supply and power inverter applications. rated for use in 125, 250, 277 and 350 vac circuits. based on the proven reliability of the automotive mini fuse; avail- able from 2 through 10 amperes. electrical characteristics: % of ampere opening rating time 100% 4 hours, min imum 200% 0.15 sec. min., 5 sec. max agency approvals: recognized under the components program of underwriters laboratories and csa certified. approved by meti to 5 amperes. agency file numbers: ul: e71611, csa lr 29862. interrupting ratings: 100 amperes at 350 vac, 50 amperes at 125 vdc and 450 amperes at 60vdc environmental specifications: operating temperature: 40 c to +125 c. physical specifications: materials: body: plastic body terminations: tin-lead (95/5) plated zn, ni barrier soldering parameters: reflow solder 235 c, 5 seconds maximum. no-clean process recommended. wave solder not recommended. non-plated terminal surfaces may not meet mil-std-202, method 208. packaging specifications: 24mm tape and reel per eia-rs481 (equivalent to iec 286, part 3); 800 fuses per reel, add packaging suffix, zr. shelf life: up to 1 year in factory sealed packaging. ordering information: through-hole version of the 446 series. electrical characteristics: same as 446 series. dimensions: contact littelfuse for specifications. soldering parameters: contact littelfuse for soldering parameters. inside terminal face of each lead is non-plated zinc. non-plated zinc terminal faces may not meet mil-std-202, method 208. to ensure that the fuse is acceptable for the application, appropriate application testing should be performed. packaging specifications: bulk pack (4,000 pieces per pack) p a t a 6 0 4 6 0 2 lf 350v 10.92 (.430") 8.76 (.345") (.032") 0.81 (.295") 7.49 1.50 (.059") max 3.2 (.126") 0.81 (.032") 3.2 (.126") 5.59 (.220") 3.81 (.150") 1.52 (.060") 1.44 (.057") 5.91 (.233") 8.81 (.347") 4.03 (.159") 1.27 (.050") dia 10.11 (.398") reference dimensions (inches): recommended pad layout: 447 mounting holes: 1000 100 10 1 0.1 0.01 1000 100 10 1 0.1 2a 3a 4a 5a 7 1/2a 10a time in seconds current in amperes average time current curves ampere voltage nominal nominal catalog rating rating cold melting i 2 t number (a) (vac) resistance( ? )(a 2 sec) 0446 002. 2 350 0.0560 2.8 0446 003. 3 350 0.0340 9.4 0446 004. 4 350 0.0240 17 0446 005. 5 350 0.0180 25 0446 07.5 7.5 350 0.0110 68 0446 010. 10 350 0.0073 93 ebf fuse fast-acting type 447 series
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