# SDR646CTM, Z, & J thru SDR647CTM, Z, & J

## 40 Amp ULTRAFAST CENTERTAP RECTIFIER 600-700 Volts 60 nsec

Maximum Ratings	Symbol	Value	Units
Peak Repetitive Reverse Voltage<br> SDR646<br> SDR647	VRRM<br>VRWM<br>VR	600<br>700	Volts
Average Rectified Forward Current (Resistive Load, 60 Hz Sine Wave, TC = 25°C)	Io	40	Amps
Peak Surge Current (8.3 ms Pulse, Half Sine Wave, TA = 25 °C)	IFSM	400	Amps
Operating & Storage Temperature	TOP & TSTG	-65 to +200	ºC
Maximum Total Thermal Resistance <br> Junction to Case	RθJC	2.0<br>3.5	ºC/W

## Electrical Characteristics

Electrical Characteristic	Symbol	Min	Max	Units
Instantaneous Forward Voltage Drop (TA = 25ºC, 300µsec Pulse)<br> IF = 10A<br> IF = 20 A	VF1<br>VF2	––<br>––	1.28<br>1.50	VDC
Instantaneous Forward Voltage Drop <br> (TA = -55 ºC)<br> (TA = 100 ºC)	VF3<br>VF4	––	1.35<br>1.17	VDC
Reverse Leakage Current (80% of rated VR, 300µs pulse min.) <br> TA = 25 ºC <br> TA = 100 ºC	IR1<br>IR2	––<br>––	50<br>5.0	µA/mA
Reverse Recovery Time (IF = 0.5A, IR = 1A, IRR = 0.25A, TA = 25ºC)	tRR	––	60	nsec
Junction Capacitance (VR = 10VDC, TA = 25ºC, f = 1MHz)	CJ	––	70	pF

## Available Part Numbers & Pin Assignment

️· SDR646CTM, SDR646CTZ, SDR646CTJ
️· SDR647CTM, SDR647CTZ, SDR647CTJ

Package	Pin 1	Pin 2	Pin 3
TO-254 (M)	Anode 1	Cathode	Anode 2
TO-254Z (Z)	Anode 1	Cathode	Anode 2
TO-257 (J)	Anode 1	Cathode	Anode 2

Notes:

1. For Ordering Information, Price, and Availability Contact Factory.
2. Screened to MIL-PRF-19500.
3. Both Legs Tied Together.
4. Per Leg.