Document Number: 94150

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

www.vishay.com

Revision: 26-May-08

1

Schottky Rectifier, 18 A

18TQ...SPbF

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 Q101 level

DESCRIPTION

The 18TQ... 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 45 V

Anode

1

3

Base

cathode

2

N/C

Available

RoHS*

COMPLIANT

MAJOR RATINGS AND CHARACTERISTICS

SYMBOL

CHARACTERISTICS

VALUES

UNITS

Rectangular waveform

18

A

Range

35 to 45

V

1800

A

0.53

V

Range

- 55 to 175

°C

VOLTAGE RATINGS

PARAMETER

SYMBOL

18TQ035SPbF

18TQ040SPbF

18TQ045SPbF

UNITS

Maximum DC reverse voltage

35

40

45

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

1800

A

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