1
Case Styles
70CRU04
Bulletin PD-20637 12/01
t
rr
= 38ns
I
F(AV)
= 70Amp
@T
C
= 116°C
V
R
= 400V
Features
Description/ Applications
Absolute Maximum Ratings
Ultrafast Rectifier
V
R
Cathode to Anode Voltage 400 V
I
F(AV)
Continuous Forward Current T
C
= 116°C Per Diode 35 A
I
FSM
Single Pulse Forward Current T
C
= 25°C Per Diode 300
P
D
Maximum Power Dissipation T
C
= 100°C Per Module 47 W
T
J
,

T
STG
Operating Junction and Storage Temperatures - 55 to 175 °C
Parameters Max Units
• Two Common-Cathode Diodes
• Ultrafast Reverse Recovery
• Ultrasoft Reverse Recovery Current Shape
• Low Forward Voltage Drop
• Low Leakage Current
• Optimized for Power Conversion: Welding and Industrial SMPS Applications
• Up to 175°C Operating Junction Temperature
The 70CRU04 integrates two state-of-the-art International Rectifier’s Ultrafast recovery rectifiers in the common-
cathode configuration. The planar structure of the diodes, and the platinum doping life-time control, provide a
Ultrasoft recovery current shape, together with the best overall performance, ruggedness and reliability
characteristics.
These devices are thus intended for high frequency applications in which the switching energy is designed not to be
predominant portion of the total energy, such as in the output rectification stage of Welding machines, SMPS, DC-
DC converters. Their extremely optimized stored charge and low recovery current reduce both over-dissipation in
the switching elements (and snubbers) and EMI/RFI.
70CRU04
TO-218
www.irf.com
Base
Common
Cathode
Anode Anode
Common
Cathode
13
2
1 2
2