HIGH EFFICIENCY RECTIFIER VOLTAGE RANGE CURRENT HER251 THRU HER258 50 to 1000 Volts 2.5Ampere R-3 .042(1.1) DIA. .038(0.96) FEATURES • • • • • 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 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: 0.020ounce, 0.56 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= 50℃ 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 = 125℃ Maximum Full Load Recovery Current,full cycle average 0.375”(9.5mm)lead length at TL=55℃ Maximum Reverse Recovery Time Test conditions IF=0.5A,IR=1.0A,IRR=0.25A Typical Thermal Resistance (NOTE 2) Typical Thermal Resistance(NOTE 1) Operating Junction Temperature Range Storage Temperature Range HER 251 50 35 50 HER 252 100 70 100 HER 253 200 140 200 HER 254 300 210 300 HER 255 400 280 400 HER 256 600 420 600 HER 257 800 560 800 HER UNITS 258 1000 Volts 700 Volts 1000 Volts I(AV) 2.5 Amp IFSM 100 Amps VF 1.0 1.3 5.0 250 IR IR(AV) 1.7 50 CJ RθJA TJ TSTG 30 µA 75 35 35 (-55 to +150) (-55 to +150) Notes: 1 Thermal resistance from junction to ambient with .375”(9.5mm)lead length, PCB. mounted. . 2. Measured at 1.0 MHz and applied reverse of 4.0 V Volts µA 100 trr Web Site: www.hkmic.com 1.5 ns PF ℃/W ℃ ℃ HIGH EFFICIENCY RECTIFIER VOLTAGE RANGE CURRENT HER251 THRU HER258 50 to 1000 Volts 2.5Ampere RATING AND CHRACTERISTIC CURVES HER251 THRU HER258 FIG.2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE 2.0 1.0 Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375"(9.5mm)Lead Length 8.3ms Single Half Sine-Wave (JEDEC Method) Tj=Tjmax CURRENT, (A) PEAK FORWARD SURGE 150 (A) AVERAGE FORWARD CURRENT, 3.0 100 50 1 Cycle 0 0 25 50 100 75 150 125 0 175 1 2 4 8 6 10 20 60 40 100 NUMBER OF CYCLES AT 60 Hz AMBIENT TEMPERATURE, (° C) FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG.4-TYPICAL REVERSE 100 CHARACTERISTICS 1.0 Tj =25° C Pulse Width=300us 10 (UA) INSTANTANEOUS REVERSE CURRENT, 80 10 00 V 0V 30 0/ 60 40 0V 0V 50 /1 00 /2 00 V 10 (A) INSTANTANEOUS FORWARD CURRENT, 100 Tj =125° C 1.0 Tj =25° C 0.1 1% Duty Cycle 0.01 0.4 0.6 0.8 1.0 1.2 0 1.4 1.6 20 40 60 80 100 120 140 PERCENT OF RATED PEAK 1.8 REVERSE VOLTAGE,(%) INSTANTANEOUS FORWARD VOLTAGE,(V) FIG.5-TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE,(pF) 100 H ER FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE REXOVERY TIME CHARACTERISTIC 25 1- H ER 25 5 Trr +0.5A HE R 50Ω NONINDUCTIVE 256 -H E R25 10Ω NONINDUCTIVE (-) 8 10 (+) 25 Vdc （approx） (-) D.U.T 1Ω NON INDUCTIVE PULSE GENERATIOR (NOTE 2) 0 0.25A OSCILLOSCOPE (NOTE 1) TJ=25° C F=1MHz -1.0A 1cm Vsig=50mVp-p NOTE: 1.Rise Time =7ns max.Input Impedance=1megohm.22pF 2.Rise time=10ns max.Source Impedance=50 ohms 1 0.1 1.0 10 100 REVERSE VOLTAGE,(V) Web Site: www.hkmic.com SET TIME BASE FOR 50 /100NS /cm