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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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P4802ACMC 데이터시트(PDF) 171 Page - Teccor Electronics |
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P4802ACMC 데이터시트(HTML) 171 Page - Teccor Electronics |
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171 / 212 page  Fuse Selection Criteria © 2002 Teccor Electronics 5 - 9 http://www.teccor.com SIDACtor® Data Book and Design Guide +1 972-580-7777 Peak Pulse Current (IPP) For circuits that do not require additional series resistance, the surge current rating (IPP) of the fuse should be greater than or equal to the surge currents associated with the lightning immunity tests of the applicable regulatory requirement (IPK): IPP ³ IPK For circuits that use additional series resistance, the surge current rating (IPP) of the fuse should be greater than or equal to the available surge currents associated with the lightning immunity tests of the applicable regulatory requirement (IPK(available)): IPP ³ IPK(available) The maximum available surge current is calculated by dividing the peak surge voltage (VPK) by the total circuit resistance (RTOTAL): IPK(available) = VPK/RTOTAL For longitudinal surges (Tip-Ground, Ring-Ground), RTOTAL is calculated for both Tip and Ring: RSOURCE = VPK/IPK RTOTAL = RTIP + RSOURCE RTOTAL = RRING + RSOURCE For metallic surges (Tip-Ring): RSOURCE = VPK/IPK RTOTAL = RTIP + RRING + RSOURCE |
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