FR251G THRU FR257G GLASS PASSIVATED JUNCTION FAST SWITCHING RECTIFIER Reverse Voltage - 50 to 1000 Volts Forward Current - 2.5 Amperes Features Plastic package has Underwriters Laboratory Flammability Classification 94V-0 utilizing Flame retardant epoxy molding compound Glass passivated junction in R-3 package 2.5 ampere operation at TA=55 with no thermal runaway Fast switching for high efficiency Mechanical Data DIM ENSIONS Case: Molded plastic, R-3 Terminals: Axial leads, solderable per MIL-STD-202, method 208 Polarity: Band denotes cathode Mounting Position: Any Weight: 0.021 ounce, 0.60 gram DIM inches mm Note 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 1.0 1.10 D 1.000 - 25.40 - FR 253G FR 254G FR 255G FR 256G FR 257G Units Maximum Ratings and Electrical Characteristics Ratings at 25 ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. Symbols FR 251G FR 252G Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 Volts Maximum RMS voltage VRMS 35 70 140 280 420 560 700 Volts Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 Volts Maximum average forward rectified current 0.375" (9.5mm) lead length at TA=55 I(AV) 2.5 Amps Peak forward surge current, IFM (Surge): 8.3mS single half sine-wave superimposed on rated load (MIL-STD-750D 4066 method) IFSM 70.0 Amps Maximum forward voltage @2.5A, 25 VF 1.3 Volts IR 5.0 300.0 Maximum DC reverse current, @ rated reverse voltage Tj=25 Tj=125 Reverse recovery time (Note 1) Trr Typical junction capacitance (Note 2) CJ Typical thermal resistance (Note 3) Operating and storage temperature range R 150 JA TJ, TSTG 250 1 500 nS 35.0 F 22.0 /W -55 to +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) Thermal resistance from junction to ambient at 0.375 (9.5mm) lead length, P.C.B. mounted A RATINGS AND CHARACTERISTIC CURVES 2