rohs compliant microsemi catalog number fst30040* fst30045* fst30050* 50v 45v 40v reverse voltage repetitive peak schottky barrier rectifier guard ring protection electrical characteristics average forward current per pkg average forward current per leg maximum surge 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 f(av) f(av) fsm fm fm rm rm i i i v v i i t t v i i t t t t t thermal and mechanical characteristics 300 amperes/35 to 50 volts storage temp range operating junction temp range max thermal resistance per leg typical thermal resistance (greased) terminal torque 35-50 inch pounds t t o o r r 30-40 inch pounds mounting base torque case to sink working peak reverse voltage 40v 45v 50v *add suffix a for common anode, d for doubler reverse energy tested typical junction capacitance per leg j c v t maximum repetitive reverse current per leg r(ov) i *pulse test: pulse width 300sec, duty cycle 2% fst30035* 35v 35v weight 3.4 ounces (95 grams) typical schottky powermod fst30035 - fst30050 175 c junction temperature c = 136c, square wave, 0jc = 0.20c/w c = 136c, square wave, 0jc = 0.40c/w 8.3ms, half sine, j = 175c f = 1 khz, 25c fm = 200a: j = 125c* fm = 200a: j = 25c* rrm, j = 125c* rrm, j = 25c r = 5.0v, c = 25c v -55c to 175c -55c to 175c stg j jc cs junction to case 0.08c/w 0.40c/w 4600 pf 4.0 ma 75 ma 0.76 volts 0.70 volts 2 amps 2000 amps 150 amps 300 amps captive lockwasher 1/4-20unc with e 0.625 --- 15.88 --- d 17.78 0.700 7.670 7.140 0.300 0.280 a b f c d g baseplate common cathode baseplate a=common anode baseplate d=doubler notes: baseplate: nickel plated copper dim. inches millimeters a b c e f g --- 34.29 79.76 --- 62.23 35.56 20.32 80.26 92.71 --- 1.350 3.140 --- 2.450 1.400 0.800 3.160 3.650 dia. min. max. min. max. notes r r to-244ab max thermal resistance per pkg jc r o 0.20c/w junction to case january, 2010 - rev. 4 www.microsemi.com
average forward current - amperes maximum allowable case temperature - c 250 200 150 100 50 0 175 165 155 145 135 125 115 105 figure 2 forward current derating - per leg 50 100 5.0 10 1.0 0.5 100,000 60,000 40,000 20,000 10,000 6000 4000 2000 1000 typical junction capacitance - per leg figure 3 0.1 junction capacitance - pf reverse voltage - volts maximum forward power dissipation - per leg figure 5 0 40 60 80 100 120 140 0 50 100 150 200 250 maximum power dissipation - watts average forward current - amperes 20 figure 1 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.0 2.0 4.0 6.0 8.0 10 20 40 60 80 100 200 400 600 800 1000 instantaneous forward current - amperes instantaneous forward voltage - volts .01 figure 4 0.1 1.0 10 100 1000 175 c 25 c 90 120 180 90 120 180 fst30035 - fst30050 typical forward characteristics - per leg typical reverse current - ma 25 c 75 c 125 c 175 c reverse voltage - volts typical reverse characteristics - per leg 0 10 20 30 40 50 60 dc 60 dc january, 2010 - rev. 4 www.microsemi.com
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