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Leshan Radio Company
Leshan Radio Company

HER308 Datasheet

3A HIGH EFFICIENCY DIODES


HER308 Datasheet Preview


LESHAN RADIO COMPANY, LTD.
HER301 thru HER308
1.Feature & Dimensions
High Efficiency Rectifiers
* Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
* High temperature metallurgically bonded construction
Reverse Voltage 50 to 1000V
Forward Current 3.0A
* Deffused junction
* Capable of meeting environmental standards of MIL-S-19500
* 3.0 A operation at TA=55°C with no thermal runaway
* For use in high frequency rectifier circuits
* Fast switching for high efficiency
* Typical IR less than 1.0µA
* High temperature soldering guaranteed:
260°C/10 seconds
* 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension
2.Mechanical Data
Case: JEDEC DO-201AD, molded plastic body
Terminals: Plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight:0.04 oz., 1.12 g
Handling precautin:None
3.Electrical Characteristic
We declare that the material of product
compliance with RoHS requirements.
Maximum Ratings & Thermal Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol
HER
301
HER
302
HER
303
HER
304
HER
305
HER
306
HER
307
HER
308
Unit
Maximum repetitive 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
0.375" (9.5mm) lead length at TA = 55°C
IF(AV)
3.0
A
Peak forward surge current 8.3ms single half
sine-wave superimposed on rated load (JEDEC
Method)
Maximum full load reverse current, full cycle
average,0.375"(9.5mm) lead lengths at TA = 55°
C
Typical thermal resistance (Note 2)
IFSM
IR(AV)
RθJA
150 A
100 µA
20 °C/W
Operating junction and storage temperature range TJ, TSTG
–50 to +150
°C
Electrical Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol
HER HER HER HER HER HER
301 302 303 304 305 306
Maximum instantaneous forward voltage at 3.0A
VF
1.00
1.30
Maximum DC reverse current TA = 25°C
at rated DC blocking voltage TA = 100°C
IR
10.0
200
Typical reverse recovery time (Note 1)
trr
50
Typical junction capacitance at 4.0V, 1MHz
CJ
45
NOTES:
1. IF = 0.5A, IR = 1.0A, IRR = 0.25A
2. Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P.C.B. mounted
HER
307
1.85
70
36
HER
308
Unit
V
µA
ns
PF
1/3
Page 1

LESHAN RADIO COMPANY, LTD.
4. Characteristic Curves ( TA = 25°C unless otherwise noted )
Fig. 1 Forward Current Derating Curve
Fig. 2 Maximum Non-repetitive Peak
Forward Surge Current
60 Hz
TJ = TJ max
Resistive or
8.3ms Single Half Sine-wave
3.0
Inductive Load
150 (JEDEC Method)
1.5
0.375" (9.5mm) Lead Length
0
0 25 50 75 100 125 150 175
Ambient Temperature, °C
Fig 3. Typical Instantaneous Forward
100 Characteristics
TJ = 25°C
Pulse width = 300µs
10 1% Duty Cycle
1.0
0.1
0.01
0.8 1.0 1.2 1.4 1.6 1.8
Instantaneous Forward Voltage (V)
Fig 5. typical transient thermal
impedance
100
10
1.0
0.1
0.01
0.1 1.0 10
t,Pulse duration,sec
100
75
0
1 10
Number of Cycles at 60Hz
100
Fig 4. Typical Reverse Characteristics
100
Tj=125
10
Tj=75
1.0
Tj=25
0.1
0.01
0
20 40
60 80 100
Percent of Rated Peak Reverse Voltage (%)
Fig 6. Typical Junction Capacitance
100
TJ = 25°C
f = 1.0 MHz
Vsig = 50mVp-p
10
0.1 1
10
Reverse Voltage (V)
100
2/3
Page 2

LESHAN RADIO COMPANY, LTD.
5.Package Dimensions in inches and (millmeters)
Φd
Package outline
L
ΦD
Dimensions
Note:
inches
mm DO-201AD
Min. Max. Min. Max. molded plastic case
L 0.335 0.375 8.5
9.5 The marking band indicates the
L1 1.0
- 25.4 - cathode
ΦD 0.197 0.220
5.0
5.6
Φd 0.048 0.052 1.2
1.3
3/3
Page 3
Part Number HER308
Manufactur Leshan Radio Company
Description 3A HIGH EFFICIENCY DIODES
Total Page 7 Pages
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