HER301 HER308 1 of 4 © 2006 Won-Top Electronics
Pb
HER301 – HER308
3.0A ULTRAFAST DIODE
Features
! Diffused Junction
! Low Forward Voltage Drop
! High Current Capability A B A
! High Reliability
! High Surge Current Capability
Mechanical Data C
! Case: DO-201AD, Molded Plastic D
! Terminals: Plated Leads Solderable per
MIL-STD- 202, Met hod 208
! Polarity: Cathode Band
! Weight: 1.2 grams (approx.)
! Mounting Position: Any
! Marking: Type Number
! Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 4
Maximum Ratings and Electrical Characteristics @TA=25°C unless otherwise specified
Single Phase, half wave, 60Hz, resistive or inductive load.
For capaciti ve load, derate current by 20%.
Characteristic Symbol HER
301 HER
302 HER
303 HER
304 HER
305 HER
306 HER
307 HER
308 Unit
Peak Repetit i ve Revers e Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR50 100 200 300 400 600 800 1000 V
RMS Reverse Voltage VR(RMS) 35 70 140 210 280 420 560 700 V
Average Rectified Output Current
(Note 1) @T
A = 55°C IO3.0 A
Non-Repetiti ve P eak Forward Surge Current
8.3ms Si ngl e half sine-wave superimposed on
rated load (JEDE C Method) IFSM 150 A
Forward Voltage @IF = 3.0A VFM 1.0 1.3 1.7 V
Peak Reverse Current @TA = 25°C
At Rated DC Blocki ng Voltage @TA = 100°C IRM 10
100 µA
Reverse Recovery Time (Note 2) trr 50 75 nS
Typical Junction Capacitance (Note 3) Cj80 50 pF
Operating Temperature Range Tj-65 to +125 °C
Storage Temperature Range TSTG -65 to +150 °C
Note: 1. Leads maintained at ambi ent temperature at a distance of 9.5mm from the case
2. Measured with IF = 0.5A, IR = 1.0A, IRR = 0.25A. See figure 5.
3. Measured at 1.0 MHz and applied reverse voltage of 4.0V D.C.
WTE
POWER SEMICONDUCTORS
DO-201AD
Dim Min Max
A25.4
B7.20 9.50
C1.20 1.30
D4.80 5.30
All Dimensions in mm
HER301 HER308 2 of 4 © 2006 Won-Top Electronics

0.01
0.1
1.0
10
100
0.6 1.0 1.4 1.8
T = 25 C
j°
Pulse width = 300 s
2% duty cycle µ
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
I , INSTANTANEOUS FORWARD CURRENT (A)
F
HER301 - HER304
HER306 - HER308
HER305
10
100
200
1 10 100
I , PEAK FORWARD SURGE CURRENT (A)
FSM
NUMBER OF CYCLES AT 60Hz
Fig. 3 Peak Forward Surge Current
8.3ms single half
sine-wave
50V DC
Approx
50 NI (Non-inductive)10 NI
1.0
NIOscilloscope
(Note 1)
Pulse
Generator
(Note 2)
Device
Under
Test
t
rr
Settimebasefor5/10ns/cm
+0.5A
0A
-0.25A
-1.0A
Notes:
1. Rise Time = 7.0ns max. Input Impedance = 1.0M , 22pF.
2. Rise Time = 10ns max. Input Impedance = 50 .
Fig. 5 Reverse Recovery Time Characteristic and Test Circuit
(+)
(+) (-)
(-)
1
10
100
1 10 100
C, CAPACITANCE (pF)
j
V , REVERSE VOLTAGE (V)
Fig. 4 Typical Junction Capacitance
R
HER306 - HER308
0
1
2
3
4
02550
75 100 125 150 175
I , AVERAGE FWD RECTIFIED CURRENT (A)
(AV)
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
A
°
Single phase half wave
Resistive or Inductive load
HER301 - HER305
HER301 HER308 3 of 4 © 2006 Won-Top Electronics
MARKING INFORMATION
TAPING SPECIFICATIONS
PACKAGING INFORMATION
Packaging Reel Di ameter /
Box Size (mm) Quantity
(PCS) Carton Size
(mm) Quantity
(PCS) Approx. Gross Weight
(KG)
TAPE & REEL 330 1,200 370 x 370 x 420 6,000 10.0
TAPE & BOX 255 x 75 x 150 1,200 400 x 273 x 415 12,000 17.0
BULK 200 x 85 x 40 500 459 x 214 x 256 12,500 16.0
Note: 1. Paper reel, white or gray color. Core material: plastic or metal.
2. Components are packed in accordance with EIA standard RS-296-E.
TAPE & REEL
Cathode = Polarity Band
HER30x = Device Number
x = 1, 2, 3, 4, 5, 6, 7 or 8
WTE = Manufacturer’s Logo
HER30x
WTE
0.8mm
MAX
10mm
1.2mm
MAX
0.8mm
MAX
6mm 52.4mm
Cathode Tape: Red
Anode Tape: White
330mm
Product ID Label
Inspection Hole
(both ends)
80±5mm
TAPE & BOX
255mm
Product ID Label
150mm
75mm
BULK
200mm
85mm
40mm
HER301 HER308 4 of 4 © 2006 Won-Top Electronics
ORDERING INFORMATION
Product No. Package Type Shipping Quantity
HER301-T3 DO-201AD 1200/Tape & Reel
HER301-TB DO-201AD 1200/Tape & Box
HER301 DO-201AD 500 Units/Box
HER302-T3 DO-201AD 1200/Tape & Reel
HER302-TB DO-201AD 1200/Tape & Box
HER302 DO-201AD 500 Units/Box
HER303-T3 DO-201AD 1200/Tape & Reel
HER303-TB DO-201AD 1200/Tape & Box
HER303 DO-201AD 500 Units/Box
HER304-T3 DO-201AD 1200/Tape & Reel
HER304-TB DO-201AD 1200/Tape & Box
HER304 DO-201AD 500 Units/Box
HER305-T3 DO-201AD 1200/Tape & Reel
HER305-TB DO-201AD 1200/Tape & Box
HER305 DO-201AD 500 Units/Box
HER306-T3 DO-201AD 1200/Tape & Reel
HER306-TB DO-201AD 1200/Tape & Box
HER306 DO-201AD 500 Units/Box
HER307-T3 DO-201AD 1200/Tape & Reel
HER307-TB DO-201AD 1200/Tape & Box
HER307 DO-201AD 500 Units/Box
HER308-T3 DO-201AD 1200/Tape & Reel
HER308-TB DO-201AD 1200/Tape & Box
HER308 DO-201AD 500 Units/Box
1. Products listed in bold are WTE Preferred devices.
2. Shipping quantity given is for minimum packing quantity only. For minimum
order quantity, please consult the Sales Department.
3. To order RoHS / Lead Free version (with Lead Free finish), add “-LF” suffix
to part number above. For example, HER301-TB-LF.
Won-Top Electronics Co., Ltd (WTE) has checked all information carefully and believes it to be correct and accurate. However, WTE cannot assume any
responsibility for inaccuracies. Furthermore, this information does not give the purchaser of semiconductor devices any license under patent rights to
manufacturer . WTE reserves the right to change any or all information herein without further notice.
WARNING: DO NOT USE IN LIFE SUPPORT EQUIPMENT. WTE power semiconductor products are not authorized for use as critical components in life
support devices or systems without the express written approval.
We power your everyday.
Won-Top Electronics Co., Ltd.
No. 44 Yu Kang North 3rd Road, Chine Chen Dist., Kaohsiung, Taiwan
Phone: 886-7-822-5408 or 886-7-822-5410
Fax: 886-7-822-5417
Email: sales@wontop.com
Internet: http://www. wontop.com