HER257

HIGH EFFICIENCY RECTIFIER HER251 THRU HER258 FEATURES • • • • • VOLTAGE RANGE CURRENT 50 to 1000 Volts 2.5Ampere R-3 .042(1.1) DIA. .038(0.96) 1.0(25.4) MIN. 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 .160(4.1) .138(3.5) .160(4.1) .138(3.5) DIA. MECHANICAL DATA • • • • • • 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 1.0(25.4) MIN. 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 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 T A = 25℃ TA = 125℃ VRRM VRMS VDC I(AV) IFSM VF IR IR(AV) trr CJ RθJA TJ TSTG HER 251 50 35 50 HER 252 100 70 100 HER 253 200 140 200 HER 254 300 210 300 2.5 HER 255 400 280 400 HER 256 600 420 600 HER 257 800 560 800 HER UNITS 258 1000 Volts 700 Volts 1000 Volts Amp Amps 100 1.0 1.3 5.0 250 100 50 30 35 (-55 to +150) (-55 to +150) 75 35 1.5 1.7 Volts µA µA ns PF ℃/W ℃ ℃ 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 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 E-mail: sales@cnmic.com Web Site: www.cnmic.com HIGH EFFICIENCY RECTIFIER HER251 THRU HER258 VOLTAGE RANGE CURRENT 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 3.0 AVE RAG E FO RWA RD C UR REN T, 150 PEA K FOR WAR D SU RG E 2.0 8.3ms Single Half Sine-Wave (JEDEC Method) Tj=Tjmax C UR RE NT, (A) 100 (A ) 1.0 Single Phase Half Wave 60Hz Resistive or Inductive Load 0 .375"(9.5mm)Lead Length 50 1 Cycle 0 1 2 0 0 25 50 75 100 125 150 175 4 6 8 10 20 40 60 100 AMBIENT TEMPERATURE, ( ° C) NUMBER OF CYCLES AT 60 Hz FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG.4-TYPICAL REVERSE 100 CHARACTERISTICS 100 IN STAN TAN EOU S FO RWA RD C UR REN T, 10 IN STAN TANE OU S RE VER SE CU RR ENT, 50 /1 00 /2 00 V 0V 40 0/ 60 0V 0V 10 00 V 10 30 80 1.0 (UA ) (A) Tj =125° C 1.0 Tj =25° C Tj =25° C Pulse Width=300us 1% Duty Cycle 0.01 0.4 0.1 0 20 40 60 80 100 120 140 0.6 0.8 1.0 1.2 1.4 1.6 1.8 PERCENT OF RATED PEAK REVERSE VOLTAGE,(%) INSTANTANEOUS FORWARD VOLTAGE,(V) FIG.5-TYPICAL JUNCTION CAPACITANCE 100 JUN CTIO N C APAC ITANC E,(pF) H ER FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE REXOVERY TIME CHARACTERISTIC 25 1H ER 2 55 +0.5A 50Ω NONINDUCTIVE 10Ω NONINDUCTIVE Trr HE R 10 256 -H E R25 8 (+) 25 Vdc （approx） (-) (-) 0 0.25A D.U.T PULSE GENERATIOR (NOTE 2) 1Ω NON INDUCTIVE OSCILLOSCOPE (NOTE 1) -1.0A 1cm TJ=25° C F=1MHz Vsig=50mVp-p 1 0.1 1.0 10 100 NOTE: 1.Rise Time =7ns max.Input Impedance=1megohm.22pF 2.Rise time=10ns max.Source Impedance=50 ohms SET TIME BASE FOR 50 /100NS /cm REVERSE VOLTAGE,(V) E-mail: sales@cnmic.com Web Site: www.cnmic.com