FR251 thru FR257 Fast Recovery Rectifiers Forward Current 2.5 Amperes Reverse Voltage 50 to 1000 Volts Features Fast switching Low leakage Low forward voltage drop High current capability High current surge High reliability TJ is 150oC (Max.) and TSTG is 175oC (Max.) with PI glue Mechanical Data Case: Molded plastic Epoxy: UL 94V-O rate flame retardant Lead: MIL-STD-202E method 208C guaranteed Mounting position: Any Weight: 0.021 ounce, 0.60 gram Maximum Ratings and Electrical Characteristics Ratings at 25oC ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20% Symbols FR 251 FR 252 FR 253 FR 254 FR 255 FR 255 -STR FR 256 FR 257 FR 257 -STR Units Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 600 800 1000 1000 Volts Maximum RMS voltage VRMS 35 70 140 280 420 420 560 700 700 Volts Maximum DC blocking voltage V DC 50 100 200 400 600 600 800 1000 1000 Volts Maximum average forward rectified current at TA=75oC I(AV) 2.5 Amps Peak forward surge current 8.3 ms single half sine-wave superimposed on rated load (JEDEC Method) IFSM 150.0 Amps Maximum instantaneous forward voltage at 2.5A DC VF 1.3 Volts 5.0 uA 100 uA Parameter Maximum DC reverse current at rated DC blocking voltage TA=25oC Maximum full load reverse current average, full cycle .375" (9.5mm) lead length at TL=55oC IR Maximum reverse recovery time (Note 1) trr Typical junction capacitance (Note 2) CJ 60 Operating junction temperature range TJ -55 to +125 o C -55 to +150 o C Storage temperature range Notes: 150 TSTG 1. Test Conditions: IF=0.5A, IR=1.0A, IRR=0.25A 2. Measured at 1 MHz and applied reverse voltage of 4.0 volts 137 250 150 500 250 nS pF RATINGS AND CHARACTERISTIC CURVES 138