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HER256 Dataheets PDF



Part Number HER256
Manufacturers MDD
Logo MDD
Description HIGH EFFICIENCY RECTIFIERS
Datasheet HER256 DatasheetHER256 Datasheet (PDF)

HER251 THRU HER258 0.042(1.1) 0.040(1.0) R-3 φ 0.160( 4.1 ) φ0.138 ( 3.5 ) HIGH EFFICIENCY RECTIFIERS Reverse Voltage - 50 to 1000 Volts Forward Current - 2.5 Amperes FEATURES The plastic package carries Underwriters Laboratory Flammability Classification 94V-0 High speed switching for high efficiency Low reverse leakage High forward surge current capability High temperature soldering guaranteed: 250 C/10 seconds,0.375”(9.5mm) lead length, 5 lbs. (2.3kg) tension MECHANICAL DATA Min.1.0 ( 25..

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HER251 THRU HER258 0.042(1.1) 0.040(1.0) R-3 φ 0.160( 4.1 ) φ0.138 ( 3.5 ) HIGH EFFICIENCY RECTIFIERS Reverse Voltage - 50 to 1000 Volts Forward Current - 2.5 Amperes FEATURES The plastic package carries Underwriters Laboratory Flammability Classification 94V-0 High speed switching for high efficiency Low reverse leakage High forward surge current capability High temperature soldering guaranteed: 250 C/10 seconds,0.375”(9.5mm) lead length, 5 lbs. (2.3kg) tension MECHANICAL DATA Min.1.0 ( 25.4 ) 0.160(4.1) 0.138(3.5) Min.1.0 ( 25.4 ) Dimensions in inches and (millimeters) Case: JEDEC R-3 molded plastic body Terminals: Plated axial leads, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight:0.012 ounce, 0.58 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified. Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%. MDD Catalog Number Maximum repetitive peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forward rectified current 0.375”(9.5mm) lead length at TA=50 C 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 TA=25 C at rated DC blocking voltage TA=100 C Maximum reverse recovery time (NOTE 1) Typical junction capacitance (NOTE 2) Typical thermal resistance (NOTE 3) Operating junction and storage temperature range SYMBOLS HER 251 HER 252 VRRM VRMS VDC 50 100 35 70 50 100 HER HER HER HER 253 254 255 256 200 300 400 600 140 210 280 420 200 300 400 600 HER 257 800 560 800 HER 258 1000 700 1000 UNITS VOLTS VOLTS VOLTS I(AV) 2.5 Amps IFSM VF IR trr CJ RθJA TJ,TSTG 60.0 1.0 50 30.0 1.3 5.0 100.0 50.0 -65 to +150 1.70 70 20.0 Amps Volts µA ns pF C/W C Note:1.Reverse recovery condition IF=0.5A,IR=1.0A,Irr=0.25A 2.Measured at 1MHz and applied reverse voltage of 4.0V D.C. 3.Thermal resistance from junction to ambient at 0.375”(9.5mm)lead length,P.C.B. mounted MDD ELECTRONIC RATINGS AND CHARACTERISTIC CURVES HER251 THRU HER258 AVERAGE FORWARD RECTIFIED CURRENT, AMPERES FIG. 1- FORWARD CURRENT DERATING CURVE 3 Single Phase Half Wave 60HZ Resistive or Inductive Load 2.0 1 0 0 25 50 75 100 125 150 175 200 INSTANTANEOUS FORWARD CURRENT,AMPERES AMBIENT TEMPERATURE, C FIG. 3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 20 TJ=25 C 10 PULSE WIDTH=300 µs 1%DUTY CYCLE 1 0.1 HER251-HER253 HER254-HER255 HER256-HER258 0.01 0.2 0.6 1.0 1.4 1.8 2.0 INSTANTANEOUS FORWARD VOLTAGE, VOLTS INSTANTANEOUS REVERSE CURRENT, MICROAMPERES PEAK FORWARD SURGE CURRENT, AMPERES FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 60 50 40 30 20 8.3ms SINGLE HALF SINE-WAVE (JEDEC Method) 10 1 10 NUMBER OF CYCLES AT 60 Hz 100 FIG. 4-TYPICAL REVERSE CHARACTERISTICS 1,000 100 TJ=100 C 10 1 TJ=25 C 0.1 0.01 0 20 40 60 80 .


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