Schottky Power Surface Mount FST80SM1-SM6 Series A1 K F 1 2 Minimum Maximum Minimum Maximum Notes 1 E 3 2 3 1 2 3 Common Cathode L M SM3 & SM4 3 PINS eq sp at .200 G A3 J C SM1 & SM2 B D H B D Millimeter Dim. Inches A2 N 2-PLCS. 1 2 1 2 3 A=Common Anode 3 SM5 & SM6 TYP. PIN CONFIGURATION TYP. PIN CONFIGURATION FOR SM1, SM3, & SM5 FOR SM2, SM4, & SM6 1 2 3 D=Doubler A1 A2 A3 B C D E F G H 1.490 1.020 .695 .110 .027 .100 .350 .015 .695 .088 1.510 1.040 .715 .120 .037 .110 .370 .025 .715 .098 37.85 26.12 17.65 2.79 0.69 2.54 8.89 0.38 17.65 2.24 38.35 26.42 18.16 3.04 0.94 2.79 9.40 0.64 18.16 2.49 J K L M N .240 1.180 .230 .065 .151 .260 1.195 .250 .085 .161 6.10 29.97 5.84 1.65 3.84 6.60 30.35 6.35 2.16 4.09 Dia. Note: Baseplate Common with Pin 2 Microsemi Catalog Catalog Number 1 2 FST8035SM _ _ FST8040SM _ _ FST8045SM _ _ FST8050SM _ _ Industry Part Number Working Peak Reverse Voltage Repetitive Peak Reverse Voltage 81CNQ035ASL 81CNQ035ASM 81CNQ040ASL 81CNQ040ASM 81CNQ045ASL 81CNQ045ASM 35V 35V 40V 40V 45V 45V 50V 50V Note: 1 Specify (1-6) to identify package desired Schottky Barrier Rectifier Guard Ring Protection 2 X 40 Amperes Avg. 175C Junction Temperature Reverse Energy Tested VRRM - 35 to 50 Volts ROHS Compliant 2 Specify C-Common Cathode, A-Common Anode, D-Doubler Electrical Characteristics 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 I F(AV) 80 Amps I F(AV) 40 Amps I FSM 800 Amps I R(OV) 2 Amps VFM 0.49 volts VFM 0.68 volts I RM 50 mA I RM 2.0 mA CJ 1900 pF TC = 145C, Square wave, R 0JC = 0.5C/W T C = 145C, Square wave, R 0JC = 1.0C/W 8.3 ms, half sine, T J = 175C f = 1 KHZ, 25C, 1sec square wave I FM = 40A: T J = 175C* I FM = 40A: T J = 25C* VRRM, T C = 125C* VRRM, T J = 25C VR = 5.0V, T C = 25C *Pulse test: Pulse width 300sec, 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 OJC R OJC R OCS -55C to 175C -55C to 175C 1.0C/W Junction to case Junction to case 0.5C/W Case to sink 0.3C/W 10 inch pounds maximum (SM1, 2) SM1-2 0.3 ounce (8.4 grams) typical SM3-4 0.24 ounce (6.7 grams) typical SM5-6 0.18 ounce (5.2 grams) typical www.microsemi.com January, 2010 - Rev. 2 FST80SM1 - FST80SM6 Figure 3 Typical Junction Capacitance - Per Leg 1000 10000 800 6000 600 4000 Junction Capacitance - pF Figure 1 Typical Forward Characteristics - Per Leg 400 200 100 80 2000 1000 60 600 400 200 100 0.1 20 150 C 10 25 C 8.0 6.0 4.0 2.0 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 100 50 160 150 140 130 120 110 0 Maximum Power Dissipation - Watts 175 C 125 C 1.0 75 C 25 C 10 20 Reverse Voltage - Volts 30 10 15 90 20 25 120 30 35 180 40 DC 50 45 Figure 5 Maximum Forward Power Dissipation - Per Leg 100 0 0.5 60 Average Forward Current - Amperes 1000 Typical Reverse Current - mAmperes 10 170 1.4 Figure 2 Typical Reverse Characteristics - Per Leg .01 5.0 180 Instantaneous Forward Voltage - Volts 0.1 1.0 Figure 4 Forward Current Derating - Per Leg Maximum Allowable Case Temperature - C Instantaneous Forward Current - Amperes 40 10 0.5 Reverse Voltage - Volts 40 50 35 30 DC 25 20 60 15 90 120 180 10 5.0 0 0 5.0 10 15 20 25 30 35 40 45 Average Forward Current - Amperes www.microsemi.com January, 2010 - Rev. 2 50