FR251G - FR257G FAST RECOVERY RECTIFIER DIODES VOLTAGE RANGE: 50 - 1000V CURRENT: 2.5 A Features ! ! Glass passivated device ! Low Forward Voltage Drop ! ! High Reliability High Surge Current Capability Diffused Junction B A A Mechanical Data ! ! ! ! ! ! C D Case: D O - 1 5 Molded Plastic Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 Polarity: Cathode Band Weight: 0.40 grams (approx.) Mounting Position: Any Marking: Type Number DO-15 Dim Min Max A 25.40 — B 5.50 7.62 C 0.686 0.889 D 2.60 3.60 All Dimensions in mm Maximum Ratings and Electrical Characteristics TA = 25C unless otherwise specified Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. Characteristic Symbol Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Average Rectified Output Current (Note 1) @TA = 55°C FR251G FR252G FR253G FR254G FR255G FR256G FR257G Unit VRRM VRWM VR 50 100 200 400 600 800 1000 V VR(RMS) 35 70 140 280 420 560 700 V IO 2.5 A Non-Repetitive Peak Forward Surge Current 8.3ms Single half sine-wave superimposed on rated load (JEDEC Method) IFSM 100 A Forward Voltage @IF = 2.0A VFM 1.3 V @TA = 25°C @TA = 100°C IRM 10 500 µA Peak Reverse Current At Rated DC Blocking Voltage Reverse Recovery Time (Note 2) trr Typical Junction Capacitance (Note 3) Cj 28 pF Operating Temperature Range Tj -65 to +125 °C TSTG -65 to +150 °C Storage Temperature Range 150 250 500 nS Note: 1. Leads maintained at ambient temperature at a distance of 9.5mm from the case 2. Measured with IF = 0.5A, IR = 1.0A, IRR = 0.25A. See figure 5. 3. Measured at 1.0 MHz and applied reverse voltage of 4.0V D.C. 1 of 2 www.sunmate.tw RATING AND CHARACTERISTIC CURVES ( FR251G - FR257G ) FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 50 Ω Trr 10 Ω + 0.5 A D.U.T. + 0 PULSE GENERATOR ( NOTE 2 ) 50 Vdc (approx) 1Ω - 0.25 A OSCILLOSCOPE ( NOTE 1 ) - 1.0 A SET TIME BASE FOR 50/100 ns/cm NOTES : 1. Rise Time = 7 ns max., Input Impedance = 1 megaohm, 22 pF. 1 cm 2. Rise time = 10 ns max., Source Impedance = 50 ohms. 3. All Resistors = Non-inductive Types. FIG.3 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 100 2.5 PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD OUTPUT CURRENT, AMPERES FIG.2 - DERATING CURVE FOR OUTPUT RECTIFIED CURRENT 2.0 1.5 1.0 0.5 8.3 m s S INGLE HALF SINE W A V E Ta = 50 °C 80 60 40 20 60Hz RESISTIVE OR INDUCTIVE LOAD 0 0 25 50 75 100 125 150 0 175 1 2 AMBIENT TEMPERATURE, ( ° C) FIG.4 - TYPICAL FORWARD CHARACTERISTICS 6 10 20 40 60 100 FIG.5 - TYPICAL REVERSE CHARACTERISTICS 100 10 Pulse W idth = 300 µs 2% Duty Cycle TJ = 100 °C REVERSE CURRENT, MICROAMPERES FORWARD CURRENT, AMPERES 4 NUMBER OF CYCLES AT 60Hz TJ = 25 °C 10 1.0 1.0 0.1 TJ = 25 °C 0.01 0.1 0 20 40 60 80 100 120 140 PERCENT OF RATED REVERSE VOLTAGE, (%) 0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 FORWARD VOLTAGE, VOLTS 2 of 2 www.sunmate.tw