FAST RECOVER RECTIFIER VOLTAGE RANGE CURRENT FR251 THRU FR257 50 to 1000 Volts 2 .5Ampere FEATURES • • • • • R-3 Low coat construction Fast switching for high efficency. Low reverse leakage High forward surge current capability High temperature soldering guaranteed: 260℃/10 secods/.375”(9.5mm)lead length at 5 lbs(2.3kg) tension .042(1.1) DIA. .038(0.96) 1.0(25.4) MIN. .160(4.1) .138(3.5) .160(4.1) .138(3.5) MECHANICAL DATA • • • • • • DIA. 1.0(25.4) MIN. Case: Transfer molded plastic Epoxy: UL94V-O rate flame retardant Polarity: Color band denotes cathode end Lead: Plated axial lead, solderable per MIL-STD-202E method 208C Mounting position: Any Weight: 0.042ounce, 1.19 grams Dimensions in inches and (millimeters) 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 VRRM VRMS VDC Maximum Repetitive Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current 0.375”(9.5mm) lead length at T A= 75℃ Peak Forward Surge Current 8.3mS single half sine wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage @ 2.5A Maximum DC Reverse Current at Rated DC Blocking Voltage TA = 25℃ TA = 100℃ Maximum Reverse Recovery Time (Note 3) T J=25℃ Typical Junction Capacitance (Note 1) FR 251 50 35 50 FR 252 100 70 100 FR 253 200 140 200 FR 254 400 280 400 FR 255 600 420 600 FR 256 800 560 800 FR 257 1000 700 1000 UNITS Volts Volts Volts I(AV) 2.5 Amp IFSM 100 Amps VF 1.3 5.0 500 Volts IR trr CJ 150 µA 250 500 60 ns pF Typical Thermal Resistance (Note 2) RθJA 30 ℃/W Operating Junction Temperature Range TJ TSTG (-55 to +150) (-55 to +150) ℃ Storage Temperature Range Notes: 1.Measured at 1.0MHz and Applied Reverse Voltage of 4.0Volits. 2 Thermal Resistance from junction to Ambient at .375”(9.5mm)lead length, P.C.board mounted. 3.Reverse Recovery Test Conditions:If=0.5mA,Ir=1.0mA,Irr=0.25A Web Site: WWW.PS-PFS.COM ℃ FAST RECOVER RECTIFIER VOLTAGE RANGE CURRENT FR251 THRU FR257 50 to 1000 Volts 2 .5Ampere RATING AND CHRACTERISTIC CURVES FR251 THRU FR257 FIG.2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE 200 8.3ms Single Half Sine-Wave (JEDEC Method) Tj=Tjmax Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375"(9.5mm)Lead Length 0 25 0 50 150 125 100 75 80 CURRENT, (A) 1.0 100 PEAK FORWARD SURGE 2.0 (A) AVERAGE FORWARD CURRENT, 3.0 175 60 40 20 10 1 2 AMBIENT TEMPERATURE, (° C) 4 8 6 10 20 40 60 80 100 NUMBER OF CYCLES AT 60 Hz FIG.4-TYPICAL REVERSE CHARACTERISTICS FIG.3-TYPICAL INSTANTANEOUS 20 10 1.0 Tj =25° C Pulse Width=300us 1% Duty Cycle 0.1 0.01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 Tj =100° C 1.0 (uA) INSTANTANEOUS REVERSE CURRENT, 10 (A) INSTANTANEOUS FORWARD CURRENT, FORWARD CHARACTERISTICS 0.1 Tj =25° C 0.01 0 INSTANTANEOUS FORWARD VOLTAGE,(V) 20 40 60 80 120 100 140 PERCENT OF RATED PEAK REVERSE VOLTAGE,(%) FIG.5-TYPICAL JUNCTION CAPACITANCE FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE REXOVERY TIME CHARACTERISTIC 100 JUNCTION CAPACITANCE,(pF) 80 60 +0.5A 40 50Ω NONINDUCTIVE 10Ω NONINDUCTIVE (-) 20 (+) 25 Vdc （approx） (-) 10 8 D.U.T 1Ω NON INDUCTIVE 6 PULSE GENERATIOR (NOTE 2) 0 0.25A OSCILLOSCOPE (NOTE 1) 4 -1.0A TJ=25° C F=1MHz 2 NOTE: 1.Rise Time =7ns max.Input Impedance=1megohm.22pF 2.Rise time=10ns max.Source Impedance=50 ohms Vsig=50mVp-p 1 0.1 1.0 10 100 REVERSE VOLTAGE,(V) Web Site: WWW.PS-PFS.COM SET TIME BASE FOR 50 /100NS /cm