rohs compliant schottky diode electrical characteristics f(av) 80 amps f(av) 40 amps fsm 800 amps r(ov) 2 amps fm 0.32 volts fm 0.44 volts rm 1.0 amp j 4000 pf rm 10 ma thermal and mechanical characteristics *pulse test: pulse width 300sec, duty cycle 2% fst8115, FST8120 r mounting base torque typical thermal resistance (greased) weight 0cs 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 max thermal resistance per leg max thermal resistance per pkg operating junction temp range storage temp range 0jc 0jc r r j t stg t c i v v i i i i i catalog number microsemi FST8120* reverse voltage working peak 20v c = 107c, square wave, 0jc = 0.5c/w c = 107c, square wave, 0jc = 1.0c/w case to sink 10 inch pounds maximum 0.3 ounce (8.4 grams) typical 0.3c/w 8.3 ms, half sine, j = 125c f = 1 khz, 25c, 1sec square wave fm = 40a: j = 125c fm = 40a: j = 25c rrm, j = 125c* rrm, j = 25c r = 5.0v, c = 25c t junction to case junction to case 1.0c/w 0.5c/w -55c to 125c -55c to 125c v v t i v i t t t t t t * r r repetitive peak reverse voltage 20v common cathode a=common anode d=doubler n 2-plcs l note: baseplate common with pin 2 3 pins eq sp at .200 k c g m h j 1 2 1 2 p a 1 2 f 3 e 1 2 notes dia. 9.40 8.89 .350 e .370 .025 .161 .085 .480 .135 .260 .098 .715 1.510 3 n p m l 3 h j k g f .151 .015 .460 .065 .088 .240 .115 1.490 .695 3.84 0.38 11.68 1.65 2.24 6.10 2.92 37.85 17.65 12.19 4.09 0.64 2.16 18.16 38.35 2.49 6.60 3.43 1.195 maximum .037 dim. inches 3 c a minimum 1.180 .027 minimum millimeter 29.97 0.69 30.35 maximum 0.94 *add the suffix a for common anode, d for doubler 87cnq020a industry part number fst8115* 15v 15v low forward voltage 2x40 amperes avg. guard ring protection schottky barrier rectifier reverse energy tested 125c junction temperature common cathode center tap january, 2010 - rev. 5 www.microsemi.com
fst8115, FST8120 instantaneous forward current - amperes typical reverse current - mamperes reverse voltage - volts 0 2 0.1 1.0 25 c 4 6 8 16 10 12 14 18 20 instantaneous forward voltage - volts typical reverse characteristics - per leg 1000 125 c 75 c 100 10 10000 figure 2 0 1.0 0.2 2.0 4.0 0.4 0.6 0.8 1.0 1.2 1.4 600 60 8.0 6.0 10 125 c 20 40 25 c 200 100 80 400 typical forward characteristics - per leg figure 1 1000 800 maximum allowable case temperature - c 50 50 maximum power dissipation - watts average forward current - amperes 0 3 0 6 10 5 15 60 90 35 20 25 30 40 45 average forward current - amperes maximum forward power dissipation - per leg 12 9 15 figure 5 18 21 60 105 0 100 110 120 115 10 5 15 90 120 180 dc 35 20 25 120 30 40 180 45 dc 100 reverse voltage - volts forward current derating - per leg 125 135 130 figure 4 0.1 0.5 1.0 6000 junction capacitance - pf 2000 1000 4000 40000 20000 10000 10 5.0 50 typical junction capacitance - per leg figure 3 100000 60000 january, 2010 - rev. 5 www.microsemi.com
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