Schottky PowerMod FST20035 - FST20050 A Dim. Inches B C G Baseplate A=Common Anode E F Baseplate Common Cathode 1/4-20UNC with Captive Lockwasher A B C D E F G Millimeters Min. Max. Min. Max. Notes --1.350 0.700 --3.140 --0.280 2.450 1.400 0.800 0.625 3.160 3.650 0.300 --34.29 17.78 --79.76 --7.140 62.23 35.56 20.32 15.88 80.26 92.71 7.670 Dia. Baseplate D=Doubler D Notes: Baseplate: Nickel plated copper Microsemi Catalog Number Working Peak Reverse Voltage Repetitive Peak Reverse Voltage FST20035* FST20040* FST20045* FST20050* 35V 40V 45V 50V 35V 40V 45V 50V TO-244AB Schottky Barrier Rectifier Guard Ring Protection 200 Amperes/35 to 50 Volts 175 C Junction Temperature Reverse Energy Tested ROHS Compliant *Add Suffix A for Common Anode, D for Doubler Electrical Characteristics I F(AV) 200 Amps Average forward current per pkg I F(AV) 100 Amps Average forward current per leg I FSM 2000 Amps Maximum surge current per leg Maximum repetitive reverse current per leg I R(OV) 2 Amps VFM Max peak forward voltage per leg 0.80 Volts VFM Max peak forward voltage per leg 0.60 Volts I RM Max peak reverse current per leg 75 mA I RM Max peak reverse current per leg 4.0 mA C Typical junction capacitance per leg 4600 pF J TC = 143°C, Square wave, R 0JC = 0.25°C/W TC = 143°C, Square wave, R 0JC = 0.50°C/W 8.3ms, half sine,T J = 175°C f = 1 KHZ, 25°C, 1µsec square wave I FM = 200A:T J = 25°C* I FM = 200A:T J = 175°C* VRRM, TJ = 125°C* VRRM, TJ = 25°C VR = 5.0V,TC = 25°C *Pulse test: Pulse width 300µsec, Duty cycle 2% Thermal and Mechanical Characteristics Storage temp range Operating junction temp range Max thermal resistance per leg Max thermal resistance per pkg Typical thermal resistance (greased) Terminal Torque Mounting Base Torque Weight T STG TJ ROJC ROJC ROCS -55°C to 175°C -55°C to 175°C 0.05°C/W Junction to case 0.25°C/W Junction to case 0.08°C/W Case to sink 35-50 inch pounds 30-40 inch pounds 3.4 ounces (95 grams) typical www.microsemi.com January, 2010 - Rev. 4 FST20035 - FST20050 Figure 1 Typical Forward Characteristics - Per Leg Figure 3 Typical Junction Capacitance - Per Leg 100,000 800 60,000 600 40,000 Junction Capacitance - pF 1000 400 200 175 C 100 25 C 80 20,000 10,000 6000 4000 2000 1000 0.1 60 20 10 8.0 6.0 4.0 2.0 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 100 155 145 135 125 115 175 C 125 C 1.0 75 C 25 C 0 10 20 Reverse Voltage - Volts 30 90 60 105 0 120 60 30 DC 180 90 120 150 Figure 5 Maximum Forward Power Dissipation - Per Leg Maximum Power Dissipation - Watts Typical Reverse Current - mA 50 Average Forward Current - Amperes 1000 .01 10 165 1.4 Figure 2 Typical Reverse Characteristics - Per Leg 0.1 5.0 175 Instantaneous Forward Voltage - Volts 10 1.0 Figure 4 Forward Current Derating - Per Leg Maximum Allowable Case Temperature - C Instantaneous Forward Current - Amperes 40 100 0.5 Reverse Voltage - Volts 40 50 105 90 DC 75 180 60 120 45 30 60 90 15 0 0 30 60 90 120 Average Forward Current - Amperes www.microsemi.com January, 2010 - Rev. 4 150