FR251 RECTRON | Alldatasheet
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Technical content
VOLTAGE RANGE 50 to 1000 Volts CURRENT 2.5 Amperes RECTRON SEMICONDUCTOR TECHNICAL SPECIFICATION
FEATURES
- Fast switching * Low leakage * Low forward voltage drop * High current capability * High current surge * High reliability MECHANICAL DATA * Case: Molded plastic * Epoxy: Device has UL flammability classification 94V-O * Lead: MIL-STD-202E method 208C guaranteed * Mounting position: Any * Weight: 0.54 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 o C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. ELECTRICAL CHARACTERISTICS (At TA = 25 o C unless otherwise noted) FR251 THRU FR257 R-3 MAXIMUM RA TINGS (At TA = 25 o C unless otherwise noted) NOTES : 1. T est Conditions: IF = 0.5A, IR = -1.0A, IRR = -0.25A 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts Dimensions in inches and (millimeters) 2001-5 RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current at TA = 75 o C Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) Operating and Storage Temperature Range SYMBOL V RRM VDC IO IFSM C J TJ, TSTG V RMS Volts Volts Volts Amps2.5 150 -65 to + 150 Amps pF 0 C 100 200 14070 100 200 400 280 400 600 420 600 600 420 600 800 560 800 1000 700 1000 1000 700 1000 UNITSFR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P 150 at Rated DC Blocking Voltage TA = 25 o C CHARACTERISTICS Maximum Full Load Reverse Current Average, Full Cycle .375” (9.5mm) lead length at TL = 55 o C Maximum Reverse Recovery Time (Note 1) V F SYMBOL IR trr UNITS 1.3 5.0 100 250 500 uAmps uAmps nSec Maximum DC Reverse Current Maximum Instantaneous Forward Voltage at 2.5A DC Volts FR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P 150 250 1.0 (25.4) MIN. .138 (3.5) .160 (4.1) 1.0 (25.4) MIN. .160 (4.1) .138 (3.5) DIA. .042 (1.1) .040 (1.0) DIA.
RATING AND CHARACTERISTIC CURVES ( FR251 THRU FR257 ) JUNCTION CAPACITANCE, (pF) FIG. 4 - TYPICAL JUNCTION CAPACITANCE REVERSE VOLTAGE, ( V ) 200 100 .1 .2 .4 1.0 2 4 10 20 40 100 TJ = 25 FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT, (A) INSTANTANEOUS FORWARD VOLTAGE, (V) TJ = 25 Pulse Width=300uS 1% Duty Cycle 3.0 1.0 0.3 0.1 .03 .01 FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC NONINDUCTIVE NONINDUCTIVE D.U.T
25 Vdc
(approx) ( - ) ( - ) ( + ) ( + ) NON- INDUCTIVE OSCILLOSCOPE (NOTE 1) PULSE GENERATOR (NOTE 2) NOTES: 1 Rise Time = 7ns max. Input Impedance = 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. trr +0.5A -0.25A -1.0A 1cm SET TIME BASE FOR 50/100 ns/cm FIG. 3 - MAXIMUM NON-REPETITIVE FORWARD PEAK FORWARD SURGE NUMBER OF CYCLES AT 60Hz 150 125 100 1 2 5 10 20 50 100 8.3ms Single Half Sine-Wave (JEDEC Method) SURGE CURRENT CURRENT, (A) FIG. 1 - TYPICAL FORWARD CURRENT AVERAGE FORWARD CURRENT, (A) AMBIENT TEMPERATURE, ( ) DERATING CURVE 2.5 2.0 1.5 1.0 0 25 50 75 100 125 150 175 Single Phase Half Wave 60Hz Resistive or Inductive Load