FR251 THRU FR257 FAST RECOVERY RECTIFIER Reverse Voltage - 50 to 1000 Volts Forward Current - 2.5 Amperes Features Plastic package has Underwriters Laboratory Flammability Classification 94V-0 Fast switching for high efficiency Construction utilizes void-free molded plastic technique 2.5 ampere operation at TA=85 with no thermal runaway High temperature soldering guaranteed: 250 /10 seconds, 0.375(9.5mm) lead length, 5 lbs. (2.3kg) tension Mechanical Data DIM ENSIONS Case: R-3 molded plastic body Terminals: Plated axial leads, solderable per MIL-STD-750, method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight: 0.021 ounce, 0.60 gram inches DIM Maximum Ratings and Electrical Characteristics @25 mm Min. Max. Min. Max. A 0.138 0.161 3.50 4.10 B 0.138 0.161 3.50 4.10 C 0.040 0.043 1.00 1.10 D 1.000 - 25.40 - Note unless otherwise specified Symbols FR251 FR252 FR253 FR254 FR255 FR256 FR257 FR257 -STR Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 1000 Volts Maximum RMS voltage VRMS 35 70 140 280 420 560 700 700 Volts Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 1000 Volts Average forward rectified current at TA=85 I(AV) 2.5 Amps Peak forward surge current 8.3mS single half sine-wave (MIL-STD-750D 4066 method) IFSM 150.0 Amps Maximum instantaneous forward voltage at IFM=2.5A, TA=25 (Note 3) VF 1.3 Volts Maximum DC reverse current at rated DC blocking voltage TA=25 TA=55 IR 10.0 150.0 Maximum reverse recovery time (Note 1) Trr A 250 CJ 65.0 TJ, TSTG -65 to +150 Typical junction capacitance (Note 2) Operating and storage temperature range 150 Notes: (1) Reverse recovery test conditions: IF=0.5A, IR=1.0A, Irr=0.25A (2) Measured at 1.0MHz and applied reverse voltage of 4.0 volts (3) Pulse test: pulse width 300uSec, Duty cycle 1% 1 Units 500 250 nS F RATINGS AND CHARACTERISTIC CURVES 2 RATINGS AND CHARACTERISTIC CURVES 3