FEATURES
Low cost
Diffused junction
Ultra fast switching for high efficiency
Low reverse leakage current
Low forward voltage drop
High current capability
The plastic material carries UL recognition 94V-0
MECHANICAL DATA
Case: JEDEC DO-27 molded plastic
Polarity: Color band denotes cathode
Weight: 0.04ounces , 1.1grams
Mounting position: Any
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Rating at 25 ambient temperature unless otherwise specified.
Single phase, half wave ,60Hz, resistive or inductive load.
For capacitive load, derate current by 20%
HER
HER
HER
HER
HER
HER
HER
HER
301G
302G
303G
304G
305G
306G
307G
308G
Maximum Recurrent Peak Reverse Voltage VRRM 50 100 200 300 400 600 800 1000 V
Maximum RMS Voltage VRMS 35 70 140 210 280 420 560 700 V
Maximum DC Blocking Voltage VDC 50 100 200 300 400 600 800 1000 V
Maximum Average Forward
Rectified Current @TA =55
Peak Forward Surage Current
8.3ms Single Half Sine-Wave
Super Imposed on Rated Load(JEDEC Method)
Peak Forward Voltage at 3.0A DC(Note1) VF1.3 V
Maximum DC Reverse Current @TJ=25
at Rated DC Blocking Voltage @TJ=100
Maximum Reverse Recovery Time(Note 1) TRR nS
Typical Junction Capacitance (Note2) CJpF
Typical Thermal Resistance (Note3) RθJA /W
Operating Temperature Range TJ
Storage Temperature Range TSTG
HER301G thru HER308G
~ 109 ~
2.Measured at 1.0 MHz and applied reverse voltage of 4.0V DC
3.Thermal resistance junction to ambient
NOTES: 1.Measured with IF=0.5AIR=1A IRR=0.25A
5.0
20
-50 to +150
UNIT
3.0
100
IR
I(AV)
GLASS HIGH EFFICIENCY RECTIFIERS REVERSE VOLTAGE - 50 to 1000 Volts
FORWARD CURRENT - 3.0 Amperes
uA
A
150
1.0
-50 to +150
50 75
50 30
IFSM A
1.7
CHARACTERISTICS SYMBOL
DO- 27
DIA.
DIA
210
.375(9.5)
.335(8.5)
.052(1.3)
.048(1.2)
.220(5.6)
.197(5.0)
1.0(25.4)
1.0(25.4)
MI
MI
RATING AND CHARACTERTIC CURVES
HER301G thru HER308G
~ 110 ~
FIG. 1 FORWARD CURRENT DERATING CURVE
AMBIENT TEMPERATURE ()
AVERAGE FORWARD CURRENT
AMPERES
1.0
025
2.0
3.0
50 75 100 125 150 175
0.5
1.5
2.5 SINGLE PHASE HALF WAVE 60Hz
RESISTIVE OR INDUCTIVE LOAD
FIG. 2 MAXIMUM NON-REPETITIVE SURGE CURRENT
NUMBER OF CYCLES AT 60Hz
PEAK FORWARD SURGE CURRENT
(AMPERES
SINGLE HALF-SINE-WAVE
(JEDEC METHOD)
200
150
100
50
0100
5020101 2 5
FIG.3 TYPICAL JUNCTION CAPACITANCE
CAPACITANCE (pF)
REVERSE VOLTAGE (VOLTS)
1000
100
1
10
100
10
11.0
Tj = 25°C f = 1 MHz
HER301G -HER305G
HER306G - HER308G
FIG.4-TYPICAL FORWARD CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT
(AMPERES)
INSTANTANEOUS FORWARD VOLTAGE (VOLTS)
TJ = 25°C
PULSE WIDTH 300us
HER306G - HER308G
HER301G - HER304G
1.0
10
0.1
100
0 0.2 0.4 0.6 0.8 1.2 1.61.4
1.0 1.8