document number: 88529 for technical ques tions within your region, please cont act one of the following: www.vishay.com revision: 23-oct-09 diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com 1 ultrafast plastic rectifier 31gf4 vishay general semiconductor features ? glass passivated chip junction ? ultrafast reverse recovery time ? low forward voltage drop ? low switching losses, high efficiency ? high forward surge capability ? solder dip 275 c max. 10 s, per jesd 22-b106 ? compliant to rohs directive 2002/95/ec and in accordance to weee 2002/96/ec typical applications for use in high frequency rectification and freewheeling application in switching mode converters and inverters for consumer, computer and telecommunication. mechanical data case: do-201ad molding compound meets ul 94 v-0 flammabi lity rating base p/n-e3 - rohs compliant, commercial grade terminals: matte tin plated leads, solderable per j-std-002 and jesd 22-b102 e3 suffix meets jesd 201 class 1a whisker test polarity: color band denotes cathode end primary characteristics i f(av) 3.0 a v rrm 400 v i fsm 60 a t rr 30 ns v f 1.25 v t j max. 150 c do-201ad maximum ratings (t a = 25 c unless otherwise noted) parameter symbol value unit maximum repetitive pe ak reverse voltage v rrm 400 v maximum rms voltage v rms 280 v maximum dc blocking voltage v dc 400 v maximum average forward rectified current, 0.375" (9.5 mm) lead length with fin i f(av) 3.0 a a without fin/pcb 1.5 peak forward surge current 8. 3 ms single ha lf sine-wave superimposed on rated load i fsm 60 a operating junction and storage temperature range t j , t stg - 40 to + 150 c reverse avalanche energy (8/20 s surge) e ar 10 mj
www.vishay.com for technical qu estions within your region, please contact one of the fo llowing: document number: 88529 2 diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com revision: 23-oct-09 31gf4 vishay general semiconductor note (1) pulse test: 300 s pulse width, 1 % duty cycle note (1) thermal resistance from junction to ambient at 0.375" (9.5 mm) lead length, p.c.b. mounted ratings and characteristics curves (t a = 25 c unless otherwise noted) fig. 1 - maximum forward current de rating curve fig. 2 - maximum non-re petitive peak forward surge current electrical characteristics (t a = 25 c unless otherwise noted) parameter test conditions symbol value unit minimum reverse brea kdown voltage 10 a v br 400 v maximum instantaneous forward voltage 3.0 a v f (1) 1.25 v maximum dc reverse current at rated dc blocking voltage i r 20 a maximum reverse recovery time i f = 0.5 a, i r = 1.0 a, i rr = 0.25 a t rr 30 ns thermal characteristics (t a = 25 c unless otherwise noted) parameter symbol value unit typical thermal resistance, junction to ambient r ja (1) 80 c/w ordering information (example) preferred p/n unit weight (g) preferred package code base quantity delivery mode 31gf4-e3/54 1.13 54 1400 13" diameter paper tape and reel 31gf4-e3/73 1.13 73 1000 ammo pack packaging 0 1.0 1.5 2.0 2.5 3.0 3.5 75 50 25 0 100 125 150 175 0.5 average forwar d rectified current (a) lead temperature (c) 0 20 40 60 80 100 1 100 10 number of cycle s at 60 hz peak forwar d s urge current (a)
document number: 88529 for technical ques tions within your region, please cont act one of the following: www.vishay.com revision: 23-oct-09 diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com 3 31gf4 vishay general semiconductor fig. 3 - typical reverse characteristics fig. 4 - typical instantaneous forward characteristics fig. 5 - typical j unction capacitance package outline dimensions in inches (millimeters) 60 40 20 0 100 80 0.01 0.001 0.1 10 1 100 1000 percent of rated peak rever s e voltage (%) in s tantaneou s rever s e current (a) t j = 150 c t j = 25 c t j = 100 c 0.4 0 0.8 1.2 1.6 2.0 0.01 0.1 10 100 1 in s tantaneou s forward voltage (v) in s tantaneou s forward current (a) 2.2 0.2 0.6 1.0 1.4 1.8 t j = 150 c t j = 25 c t j = 100 c 1 0.1 10 100 100 1000 10 1 rever s e voltage (v) junction capacitance (pf) do-201ad 0.210 (5.3) 0.190 (4.8) dia. 0.052 (1.32) 0.048 (1.22) dia. 1.0 (25.4) min. 1.0 (25.4) min. 0.375 (9.5) 0.285 (7.2)
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