rohs compliant fm 0.68 volts fm 0.49 volts rm 2 ma j 1900 pf rm 50 ma *add the suffix a for common anode, d for doubler schottky minimod thermal and mechanical characteristics electrical characteristics f(av) 80 amps f(av) 40 amps fsm 800 amps r(ov) 2 amps *pulse test: pulse width 300sec, duty cycle 2% fst8035 - fst8050 max thermal resistance per leg 0jc typical thermal resistance (greased) mounting base torque max thermal resistance per pkg weight 0jc 0cs r r average forward current per pkg average forward current per leg maximum surge current per leg max repetitive peak reverse current per leg max peak forward voltage per leg max peak forward voltage per leg max peak reverse current per leg max peak reverse current per leg typical junction capacitance per leg operating junction temp range storage temp range stg t j r t c i v v i i i i i n 2-plcs fst8050* fst8045* fst8040* fst8035* catalog number microsemi c 3 pins eq sp at .200 k m voltage peak reverse working 45v 50v 35v 40v h g j l p 1 2 a f 3 e c = 145c, square wave, 0jc = 1.0c/w c = 145c, square wave, 0jc = 0.5c/w 1.0c/w junction to case 0.3 ounce (8.4 grams) typical 10 inch pounds maximum case to sink 0.3c/w 0.5c/w fm = 40a: j = 175c* 8.3 ms, half sine, j = 175c f = 1 khz, 25c, 1sec square wave fm = 40a: j = 25c* rrm, j = 125c* rrm, j = 25c r = 5.0v, c = 25c t junction to case -55c to 175c -55c to 175c v v t i v i t t t t t t r r dia. notes c 0.69 0.94 .027 .037 .370 1.510 .715 .098 .260 .135 .480 .085 .161 .025 repetitive peak reverse voltage 45v 50v 35v 40v m p n l k g h j f e .065 .151 .015 .115 .460 .695 .088 .240 .350 1.490 1.65 3.84 0.38 2.92 11.68 17.65 2.24 6.10 8.89 37.85 12.19 2.16 4.09 0.64 3.43 38.35 18.16 2.49 6.60 9.40 maximum 1.195 dim. inches a minimum 1.180 millimeter minimum 29.97 maximum 30.35 d=doubler a=common anode common cathode 1 2 1 2 1 2 3 3 3 note: baseplate common with pin 2 part number 81cnq045, a 81cnq040, a 81cnq035, a industry guard ring protection rrm 2x40 amperes avg. schottky barrier rectifier reverse energy tested v - 35 to 50 volts 175c junction temperature january, 2010 - rev. 4 www.microsemi.com
fst8035 - fst8050 instantaneous forward current - amperes typical reverse current - mamperes reverse voltage - volts 0 75 c 25 c .01 0.1 10 20 40 30 50 typical reverse characteristics - per leg instantaneous forward voltage - volts 100 125 c 10 1.0 175 c 1000 figure 2 0 1.0 0.2 2.0 4.0 0.4 0.6 0.8 1.0 1.2 1.4 600 25 c 60 150 c 6.0 8.0 10 20 40 200 100 80 400 typical forward characteristics - per leg figure 1 800 1000 maximum allowable case temperature - c 50 50 maximum power dissipation - watts average forward current - amperes 0 5.0 0 10 10 5.0 15 35 20 25 30 40 45 maximum forward power dissipation - per leg average forward current - amperes 20 15 25 figure 5 30 35 120 0 110 130 150 140 10 0.5 15 90 60 120 180 dc 120 35 20 25 60 90 30 180 40 45 dc 100 reverse voltage - volts forward current derating - per leg 160 180 170 figure 4 0.1 0.5 1.0 junction capacitance - pf 600 200 100 400 1000 2000 4000 10 5.0 50 typical junction capacitance - per leg 6000 10000 figure 3 january, 2010 - rev. 4 www.microsemi.com
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