HIGH EFFICIENCY RECTIFIER
HER251 THRU HER257
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
AVERAGE FORWARD CURRENT,
150
PEAK FORWARD SURGE
2.0
8.3ms Single Half Sine-Wave
(JEDEC Method) Tj=Tjmax
CURRENT, (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
INSTANTANEOUS FORWARD CURRENT,
10
INSTANTANEOUS REVERSE CURRENT,
50
/1
00
/2
00
V
0V
40
0/
60
0V
0V
10
00
V
10
30
80
1.0
(UA)
(A)
T
j
=125° C
1.0
T
j
=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
JUNCTION CAPACITANCE,(pF)
H ER
FIG.6-TEST CIRCUIT DIAGRAM AND
REVERSE REXOVERY TIME CHARACTERISTIC
25 1-H
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)
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