Document Number: 93955 For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
Revision: 22-Aug-08 1
Schottky Rectifier, 20 A
20TQ...S
Vishay High Power Products
FEATURES
• 150 °C T
J
operation
• 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 Q101 level
DESCRIPTION
The 20TQ... Schottky rectifier series 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)
20 A
V
R
35 to 45 V
Base
cathode
D
2
PAK
N/C Anode
1
3
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
I
F(AV)
Rectangular waveform 20 A
V
RRM
Range 35 to 45 V
I
FSM
t
p
= 5 µs sine 1800 A
V
F
20 Apk, T
J
= 125 °C 0.51 V
T
J
Range - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 20TQ035S 20TQ040S 20TQ045S UNITS
Maximum DC reverse voltage V
R
35 40 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
I
F(AV)
50 % duty cycle at T
C
= 116 °C, rectangular waveform 20
A
Maximum peak one cycle
non-repetitive surge current
See fig. 7
I
FSM
5 µs sine or 3 µs rect. pulse
Following any rated load
condition and with rated
V
RRM
applied
1800
10 ms sine or 6 ms rect. pulse 400
Non-repetitive avalanche energy E
AS
T
J
= 25 °C, I
AS
= 4 A, L = 3.40 mH 27 mJ
Repetitive avalanche current I
AR
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
4A
