FR251

FR251 THRU FR257 Features · Fast switching · Low leakage · Low forward voltage drop · High current capability · High current surge · High reliability CURRENT 2.5 Amperes VOLTAGE 50 to 1000 Volts DO-201AD 0.210(5.3) 0.188(4.8) DIA. 1.0(25.4) MIN. 0.375(9.5) 0.285(7.2) Mechanical Data · Case : JEDEC DO-201AD molded plastic body · Terminals : Plated axial lead solderable per MIL-STD-750, method 2026 · Polarity : Color band denotes cathode end · Mounting Position : Any · Weight : 0.041 ounce, 1.18 gram 0.042(1.1) 0.037(0.9) DIA. 1.0(25.4) MIN. Dimensions in inches and (millimeters) Maximum Ratings And Electrical Characteristics (Ratings at 25℃ ambient temperature unless otherwise specified, Single phase, half wave 60Hz, resistive or inductive load. For capacitive load, derate by 20%) Symbols Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forward rectified current 0.375"(9.5mm) lead length TA=75℃ Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC) method Maximum instantaneous forward voltage at 2.5A Maximum DC reverse current at rated DC blocking voltage Maximum full load reverse current full cycle average. 0.375"(9.5mm) lead length at TL=55℃ Maximum reverse recovery time (Note 1) Typical junction capacitance (Note 2) Operating junction and storage temperature range IR VRRM VRMS VDC I(AV) FR 251 50 35 50 FR 252 100 70 100 FR 253 200 140 200 FR 254 400 280 400 2.5 FR 255 600 420 600 FR 256 800 560 800 FR 257 1000 700 1000 Units Volts Volts Volts Amps IFSM 150 1.3 5.0 Amps Volts VF μA 100 Trr CJ TJ TSTG 150 60 -65 to +150 250 500 ns pF ℃ Notes: (1) Test conditions: IF=0.5A, IR=1.0A, Irr=0.25A. (2) Measured at 1MHz and applied reverse voltage of 4.0 Volts. RATINGS AND CHARACTERISTIC CURVES FR251 THRU FR257 FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT(A) 2.5 PEAK FORWARD SURGE CURRENT(AMPERES) 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 150 175 SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INDUCTIVE LOAD FIG.2-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 150 8.3m SINGLE HALF SINE WAVE (JEDEC Method) 125 100 75 50 25 0 1 2 4 6 8 10 AMBIENT TEMPERATURE ( ℃) FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 20 40 60 100 NUMBER OF CYCLES AT 60Hz 20 INSTANTANEOUS FORWARD CURRENT(AMPERES) 10 FIG.4-TYPICAL JUNCTION CAPACITANCE 200 100 JUNCTION CAPACITANCE(pF) 60 40 20 10 6 4 2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 1 0.1 0.2 0.4 1 2 4 10 20 40 100 REVERSE VOLTAGE. (V) TJ=25℃ 3 1 0.3 0.1 TJ=25℃ 0.03 0.01 Pulse Width=300mS 1% Duty Cycle INSTANTANEOUS FORWARD VOLTAGE (VOLTS) FIG.5-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50W NON INDUCTIVE 10W NON INDUCTIVE +0.5A Trr (+) 25Vdc (APPROX) D.U.T. PULSE GENERATOR (NOTE2) 0 -0.25A ( ) NON INDUCTIVE 1W OSCILLOSCOPE (NOTE1) -1.0A 1cm SET TIME BASE FOR 50/100 ns/cm NOTES: 1.Rise Time=7ns max. input impedance=1 megohm 22pF 2.Rise Time=10ns max. source impedance =50 ohms