1N4148 silicon epitaxial planar diode for various detector, modulator, demodulator ade-208-147a (z) rev. 1 aug. 1995 features low capacitance. (c = 4.0pf max) short reverse recovery time. (t rr = 4.0ns max) high reliability with glass seal. ordering information type no. cathode band mark package code 1N4148 black h do-35 outline 1. cathode 2. anode cathode band 1 2 h type no.
1N4148 2 absolute maximum ratings (ta = 25c) item symbol value unit peak reverse voltage v rm 100 v reverse voltage v r 75 v peak forward current i fm 450 ma non-repetitive peak forward surge current i fsm *1 a average forward current i o 150 ma power dissipation pd 500 mw storage temperature tstg C65 to +200 c note: within 1s forward surge current. electrical characteristics (ta = 25c) item symbol min typ max unit test condition forward voltage v f 1.0 v i f = 10ma reverse current i r 25nav r = 20v capacitance c 4.0 pf v r = 0v, f = 1mhz reverse recovery time t rr * 4.0 ns i f = 10ma, v r = 6v, irr = 1ma, r l = 100 w note: reverse recovery time test circuit 3k w 0.1 f ro = 50 w rin = 50 w dc supply pulse generator sampling oscilloscope trigger
1N4148 3 forward voltage v (v) f 0 0.2 0.8 10 10 ? 10 ? forward current i (a) f ? 0.6 1.0 0.4 10 ? 1.2 ta = ?5 c ta = 25 c ta = 125 c ta = 75 c fig. 1 forward current vs. forward voltage reverse voltage v (v) r 020 10 10 ? 10 ? reverse current i (a) r ? 60 80 40 10 ? 10 ? 100 10 ? ta = 75 c ta = 125 c ta = 25 c fig. 2 reverse current vs. reverse voltage
1N4148 4 reverse voltage v (v) r 1.0 10 2 10 1.0 10 capacitance c (pf) ? 10 f = 1mhz fig. 3 capacitance vs. reverse voltage package dimensions 26.0 min 4.2 max 26.0 min 0.5 2.0 max f f h 1 n 4 cathode band (black) 12 1n4 148 expanded drawing of marking h hitachi code jedec code eiaj code weight (g) do-35 do-35 sc-48 0.13 1 2 cathode anode unit: mm
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