1N4942 thru 1n4948 fast switching plastic rectifier voltage - 200 to 1000 volts current - 1.0 ampere features l high surge current capability l plastic package has underwriters laboratory flammability classification 94v - o utilizing flame retardant e poxy molding compound l void - free plastic in a do - 41 package l 1.0 ampere operation at t a =55 with no thermal runaway l fast switching for high efficiency l exceeds environmental standards of mil - s - 19500/228 mechanical data case: molded plastic, do - 41 terminals: axial leads, solderable per mil - std - 202, method 208 polarity: band denotes cathode mou nting position: any weight: 0.012 ounce, 0.3 gram maximum ratings and electrical characteristics ratings at 25 ambient temperature unless otherwise specified. single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. 1N4942 1n4944 1n4946 1n4947 1n4948 units maximum recurrent peak reverse voltage 200 400 600 800 1000 v maximum rms voltage 140 280 420 560 700 v maximum dc blocking voltage 200 400 600 800 1000 v maximum average forward rectified current .375 "(9.5mm) lead length at t a =55 1.0 a peak forward surge current 8.3ms single half sine wave superimposed on rated load(jecec method) 30 a maximum forward voltage at 1.0a 1.3 v maximum reverse current t j =25 at rated dc blocking voltage t j =100 5.0 500 a a typical junction capa citance (note 1) 12 p f maximum reverse recovery time(note 2) 150 150 250 250 250 ns typical thermal resistance (note 3) r ja 41 /w operating and storage temperature range - 55 to +150 do - 41
notes: 1. measured at 1 mhz and applied reverse voltage of 4.0 v dc 2. reverse recovery test conditions: i f =.5a, i r =1a, i rr =.25a 3. thermal resistance from junction to ambient and from junction to lead at 0.375"(9.5mm) lead length p.c.b. mounted rating and characteristic curves 1N4942 thru 1n4948 fig. 1 - reverse recovery time characteristic and test circuit diagram fig. 2 - typical instantaneous fig. 3 - forward current derating curve forward characteristics
fig. 4 - typical junction cap acitance fig. 5 - peak forward surge current
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