Document
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 .