User Manual

Document Number: 94510 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 21-Jul-08 1
Ultrafast Rectifier,
2 x 35 A FRED Pt
TM
70CRU04PbF
Vishay High Power Products
FEATURES
• Two common-cathode diodes
• Ultrafast reverse recovery
• Ultrafast 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
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for industrial level
DESCRIPTION
The 70CRU04 integrates two state of the art Vishay HPP
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-to-dc converters. Their
extremely optimized stored charge and low recovery current
reduce both over-dissipation in the switching elements (and
snubbers) and EMI/RFI.
PRODUCT SUMMARY
t
rr
38 ns
I
F(AV)
at T
C
= 116 °C 2 x 35 A
V
R
400 V
Base
common
cathode
Anode
Common
cathode
1
2
1
2
2
Anode
3
TO-218
Available
RoHS*
COMPLIANT
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS MAX. UNITS
Cathode to anode voltage V
R
400 V
Continuous forward current per diode I
F(AV)
T
C
= 116 °C 35
A
Single pulse forward current per diode I
FSM
T
C
= 25 °C 300
Maximum power dissipation per module P
D
T
C
= 100 °C 47 W
Operating junction and storage temperatures T
J
, T
Stg
- 55 to 175 °C
ELECTRICAL SPECIFICATIONS PER DIODE (T
J
= 25 °C unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITS
Breakdown voltage,
blocking voltage
V
BR
,
V
R
I
R
= 100 µA 400 - -
V
Forward voltage V
F
I
F
= 35 A - 1.11 1.32
I
F
= 35 A, T
J
= 125 °C - 0.98 1.14
I
F
= 35 A, T
J
= 175 °C - 0.92 1.05
Reverse leakage current I
R
V
R
= V
R
rated - - 100 µA
T
J
= 150 °C, V
R
= V
R
rated - - 2 mA
Junction capacitance C
T
V
R
= 400 V - 70 - pF
* Pb containing terminations are not RoHS compliant, exemptions may apply