155

Revised: November 1, 2010 05:04 PM

©2010 Littelfuse, Inc

Specifications are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

4 / 6 / 8 / 10 / 15 Amp Quadracs

QxxxxLTx Series

QxxxxLTx Series

Description

Main Features

The Quadrac is an internally triggered Triac designed for

AC switching and phase control applications. It is a Triac

and DIAC in a single package, which saves user expense

by eliminating the need for separate Triac and DIAC

components.

Standard type devices normally operate in Quadrants I & III

triggered from AC line.

Alternistor type Quadracs are used in circuits requiring high

dv/dt capability.

Symbol

Value

Unit

I

T(RMS)

4 to 15

A

V

400 to 600

V

DIAC V

BO

33 to 43

V

Schematic Symbol

Applications

Excellent for AC switching and phase control applications

such as lighting and heating. Typical applications are AC

solid-state switches, light dimmers, power tools, home/

brown goods and white goods appliances.

Alternistor Quadracs (no snubber required) are used in

applications with extremely inductive loads requiring

highest commutation performance.

Internally constructed isolated package is offered for ease

of heat sinking with highest isolation voltage.

Features & Benefits

• RoHS Compliant

• Glass – passivated

junctions

• Voltage capability up to

600 V

• Surge capability up to

200 A

Agency Approval

Agency

Agency File Number

®

L Package : E71639

MT2

MT1

T

®