Littelfuse QxxxxLTx Series - Manual

169
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor ® brand Thyristors
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
DRM
/ V
RRM
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
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3P)4
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(MBTT
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QBTTJWBUFE

junctions
t

7PMUBHF
DBQBCJMJUZ
VQ
UP

600 V
t

4VSHF
DBQBCJMJUZ
VQ
UP

200 A
Agency Approval
Agency Agency File Number
®
L Package : E71639
MT2 MT1
T