Document Number: 93340 For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
Revision: 21-Aug-08 1
Schottky Rectifier, 2 x 20 A
40CTQ045
Vishay High Power Products
FEATURES
• 150 °C T
J
operation
• Center tap configuration
• Very low forward voltage drop
• High frequency operation
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
• Designed and qualified for industrial level
DESCRIPTION
This center tap Schottky rectifier has been optimized for very
low forward voltage drop, with moderate leakage. The
proprietary barrier technology allows for reliable operation up
to 150 °C junction temperature. Typical applications are in
switching power supplies, converters, freewheeling diodes,
and reverse battery protection.
PRODUCT SUMMARY
I
F(AV)
2 x 20 A
V
R
45 V
TO-220AB
Anode
1 3
2
Base
common
cathode
2
Common
cathode
Anode
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
I
F(AV)
Rectangular waveform 40 A
V
RRM
45 V
I
FSM
t
p
= 5 µs sine 1240 A
V
F
20 Apk, T
J
= 125 °C (per leg) 0.48 V
T
J
Range - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 40CTQ045 UNITS
Maximum DC reverse voltage V
R
45 V
Maximum working peak reverse voltage V
RWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average forward current
See fig. 5
per leg
I
F(AV)
50 % duty cycle at T
C
= 116 °C, rectangular waveform
20
A
per device 40
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
I
FSM
5 µs sine or 3 µs rect. pulse
Following any rated load
condition and with rated
V
RRM
applied
1240
10 ms sine or 6 ms rect. pulse 350
Non-repetitive avalanche energy per leg E
AS
T
J
= 25 °C, I
AS
= 3 A, L = 4.4 mH 20 mJ
Repetitive avalanche current per leg I
AR
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
3A
