Schottky Diode FST8115, FST8120 F A P 1 2 3 1 2 Common Cathode E 3 Minimum Maximum Minimum Maximum Notes A C E F G H J K L M N P L 1 2 3 A=Common Anode M 3 PINS eq sp at .200 G K Millimeter Dim. Inches N 2-PLCS C J 1 2 3 D=Doubler 1.180 .027 .350 1.490 .695 .088 .240 .115 .460 .065 .151 .015 1.195 .037 .370 1.510 .715 .098 .260 .135 .480 .085 .161 .025 29.97 0.69 8.89 37.85 17.65 2.24 6.10 2.92 11.68 1.65 3.84 0.38 30.35 0.94 9.40 38.35 18.16 2.49 6.60 3.43 12.19 2.16 4.09 0.64 Dia. H Note: Baseplate Common with Pin 2 Schottky Barrier Rectifier Guard ring protection Microsemi Catalog Number FST8115* FST8120* Industry Part Number Working Peak Reverse Voltage Repetitive Peak Reverse Voltage 87CNQ020A 15V 20V 15V 20V Common cathode center tap 2X40 Amperes avg. 125°C Junction temperature Reverse energy tested Low forward voltage ROHS Compliant *Add the Suffix A for Common Anode, D for Doubler Electrical Characteristics I F(AV) 80 Amps Average forward current per pkg I F(AV) 40 Amps Average forward current per leg I FSM 800 Amps Maximum surge current per leg Max repetitive peak reverse current per leg I R(OV) 2 Amps VFM 0.32 Volts Max peak forward voltage per leg VFM 0.44 Volts Max peak forward voltage per leg I RM 1.0 Amp Max peak reverse current per leg I RM 10 mA Max peak reverse current per leg CJ 4000 pF Typical junction capacitance per leg TC = 107°C, Square wave, R0JC = 0.5°C/W TC = 107°C, Square wave, R0JC = 1.0°C/W 8.3 ms, half sine, T J = 125°C f = 1 KHZ, 25°C, 1µsec square wave I FM = 40A: T J = 125°C I FM = 40A: T J = 25°C * VRRM, T J = 125°C* VRRM, T J = 25°C VR = 5.0V, T C = 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) Mounting Base Torque Weight T STG TJ R 0JC R 0JC R 0CS -55°C to 125°C -55°C to 125°C 1.0°C/W Junction to case 0.5°C/W Junction to case Case to sink 0.3°C/W 10 inch pounds maximum 0.3 ounce (8.4 grams) typical www.microsemi.com January, 2010 - Rev. 5 FST8115, FST8120 Figure 3 Typical Junction Capacitance - Per Leg 1000 100000 800 60000 600 40000 Junction Capacitance - pF Figure 1 Typical Forward Characteristics - Per Leg 400 200 100 80 20000 10000 6000 4000 2000 60 1000 0.1 5.0 1.0 10 50 100 Figure 4 Forward Current Derating - Per Leg Maximum Allowable Case Temperature - C Instantaneous Forward Current - Amperes 40 20 25 C 125 C 10 8.0 6.0 4.0 2.0 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 135 130 125 120 115 110 0 Maximum Power Dissipation - Watts 100 125 C 10 75 C 25 C 2 4 6 8 10 Reverse Voltage - Volts 12 14 10 15 20 25 30 35 40 45 50 Figure 5 Maximum Forward Power Dissipation - Per Leg 1000 0 5 180 120 Average Forward Current - Amperes 10000 0.1 90 60 100 1.4 Figure 2 Typical Reverse Characteristics - Per Leg 1.0 DC 105 Instantaneous Forward Voltage - Volts Typical Reverse Current - mAmperes 0.5 Reverse Voltage - Volts 16 18 20 21 18 DC 15 180 12 120 9 90 6 60 3 0 0 5 10 15 20 25 30 35 40 45 Average Forward Current - Amperes www.microsemi.com January, 2010 - Rev. 5 50