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 TJ 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
IF(AV) 20 A
VR35 to 45 V
Base
cathode
D
2
PAK N/C Anode
13
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
IF(AV) Rectangular waveform 20 A
VRRM Range 35 to 45 V
IFSM tp = 5 µs sine 1800 A
VF20 Apk, TJ = 125 °C 0.51 V
TJRange - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 20TQ035S 20TQ040S 20TQ045S UNITS
Maximum DC reverse voltage VR35 40 45 V
Maximum working peak reverse voltage VRWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average forward current
See fig. 5 IF(AV) 50 % duty cycle at TC = 116 °C, rectangular waveform 20
A
Maximum peak one cycle
non-repetitive surge current
See fig. 7
IFSM
5 µs sine or 3 µs rect. pulse Following any rated load
condition and with rated
VRRM applied
1800
10 ms sine or 6 ms rect. pulse 400
Non-repetitive avalanche energy EAS TJ = 25 °C, IAS = 4 A, L = 3.40 mH 27 mJ
Repetitive avalanche current IAR
Current decaying linearly to zero in 1 µs
Frequency limited by TJ maximum VA = 1.5 x VR typical 4A