Document Number: 94149

For technical questions, contact: diodes-tech@vishay.com

www.vishay.com

Revision: 16-Apr-08

1

Schottky Rectifier, 18 A

18TQ...PbF Series

Vishay High Power Products

FEATURES

• 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

• Lead (Pb)-free (“PbF” suffix)

• Designed and qualified for industrial level

DESCRIPTION

The 18TQ...PbF Schottky rectifier series has been optimized

for low reverse leakage at high temperature. The proprietary

barrier technology allows for reliable operation up to 175 °C

junction temperature. Typical applications are in switching

power supplies, converters, freewheeling diodes, and

reverse battery protection.

PRODUCT SUMMARY

18 A

35 to 50 V

TO-220AC

Anode

1

3

Cathode

Base

cathode

2

Available

Pb-free

RoHS*

COMPLIANT

MAJOR RATINGS AND CHARACTERISTICS

SYMBOL

CHARACTERISTICS

VALUES

UNITS

Rectangular waveform

18

A

Range

35 to 50

V

1800

A

0.53

V

Range

- 55 to 175

°C

VOLTAGE RATINGS

PARAMETER

SYMBOL

18TQ035PbF

18TQ040PbF

18TQ045PbF

18TQ050PbF

UNITS

Maximum DC reverse voltage

35

40

45

50

V

Maximum working peak reverse voltage

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

TEST CONDITIONS

VALUES

UNITS

Maximum average forward current

See fig. 5

18

A

Maximum peak one cycle

non-repetitive surge current

See fig. 7

5 µs sine or 3 µs rect. pulse

Following any rated load

condition and with rated

1800

10 ms sine or 6 ms rect. pulse

390

Non-repetitive avalanche energy

24

mJ

Repetitive avalanche current

Current decaying linearly to zero in 1 µs

3.6

A

* Pb containing terminations are not RoHS compliant, exemptions may apply