QxxxxLTx Series - Teccor® 4/6/8/10/15Amp QUADRAC® Devices

Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.

Teccor brand Quadrac devices are triacs that include a diac trigger mounted inside the same package. This device, developed by Littelfuse, saves the user the expense and assembly time of buying a discrete diac and assembling in conjunction with a gated triac. Also, the alternistor Quadrac device (QxxxxLTH) eliminates the need for a snubber network.

The Quadrac device is a bidirectional AC switch and is gate controlled for either polarity of main terminal voltage. Its primary purpose is for AC switching and phase control applications such as speed controls, temperature modulation controls, and lighting controls where noise immunity is required.

Triac current capacities range from 4A to 15A with voltage ranges from 200V to 600V. Quadrac devices are available in the TO-220 package.

The TO-220 package is electrically isolated to 2500V rms from the leads to mounting surface. 4000V rms is available on special order. This means that no external isolation is required, thus eliminating the need for separate insulators and insulator-mounting steps and saving dollars over "hot tab" devices. All Teccor triac and diac chips have glass-passivated junctions to ensure long-term device reliability and parameter stability.

Variations of devices in this data sheet are available for custom design applications. Consult the factory for more information.

Features & Benefits:
  • RoHS Compliant
  • Glass – passivated junctions
  • Voltage capability up to 600 V

Access specifications, certifications, check availability and order parts below

dv/dt @
Q4004LTTPTO-220 Isolated Tab433434000.0121.65550CheckOrder
Q4006LTHTPTO-220 Isolated Tab633434000.0121.680450CheckOrder
Q4006LTTPTO-220 Isolated Tab633434000.0121.680100CheckOrder
Q4008LTHTPTO-220 Isolated Tab833434000.0121.6100450CheckOrder
Q4008LTTPTO-220 Isolated Tab833434000.0121.6100120CheckOrder
Q4010LTHTPTO-220 Isolated Tab1033434000.0121.6120700CheckOrder
Q4010LTTPTO-220 Isolated Tab1033434000.0121.6120150CheckOrder
Q4015LTHTPTO-220 Isolated Tab1533434000.0121.6200700CheckOrder
Q4015LTTPTO-220 Isolated Tab1533434000.0121.6200200CheckOrder
Q6004LTTPTO-220 Isolated Tab433436000.0121.65550CheckOrder
Q6006LTHTPTO-220 Isolated Tab633436000.0121.680350CheckOrder
Q6006LTTPTO-220 Isolated Tab633436000.0121.68085CheckOrder
Q6008LTHTPTO-220 Isolated Tab833436000.0121.6100350CheckOrder
Q6008LTTPTO-220 Isolated Tab833436000.0121.6100100CheckOrder
Q6010LTHTPTO-220 Isolated Tab1033436000.0121.6120600CheckOrder
Q6010LTTPTO-220 Isolated Tab1033436000.0121.6120120CheckOrder
Q6015LTHTPTO-220 Isolated Tab1533436000.0121.6200600CheckOrder
Q6015LTTPTO-220 Isolated Tab1533436000.0121.6200150CheckOrder
Obsolete: 2011-12-31
Replaced By: Q4004LT
TO-220 Isolated Tab433432000.0521.65550Check
Obsolete: 2011-12-31
Replaced By: Q4006LT
TO-220 Isolated Tab633432000.0521.680100Check
Obsolete: 2011-12-31
Replaced By: Q4006LTHTP
TO-220 Isolated Tab633432000.0121.680100Check
Obsolete: 2011-12-31
Replaced By: Q4008LT
TO-220 Isolated Tab833432000.0521.6100120Check
Obsolete: 2011-12-31
Replaced By: Q4008LTHTP
TO-220 Isolated Tab833432000.0121.6100120Check
Obsolete: 2011-12-31
Replaced By: Q4010LT
TO-220 Isolated Tab1033432000.0521.6120150Check
Obsolete: 2011-12-31
Replaced By: Q4015LT
TO-220 Isolated Tab1533432000.0521.6200200Check
Obsolete: 2011-12-31
Replaced By: Q4015LTH
TO-220 Isolated Tab1533432000.0121.6200200Check
Obsolete: 2016-03-31
Replaced By: Q4004LTTP
TO-220 Isolated Tab433434000.0121.65550Check
Obsolete: 2016-03-31
Replaced By: Q4006LTTP
TO-220 Isolated Tab633434000.0121.680100Check
Obsolete: 2016-03-31
Replaced By: Q4006LTHTP
TO-220 Isolated Tab633434000.0121.680450Check
Obsolete: 2016-03-31
Replaced By: Q4008LTTP
TO-220 Isolated Tab833434000.0121.6100120Check
Obsolete: 2016-03-31
Replaced By: Q4008LTHTP
TO-220 Isolated Tab833434000.0121.6100450Check
Obsolete: 2016-03-31
Replaced By: Q4010LTTP
TO-220 Isolated Tab1033434000.0121.6120150Check
Obsolete: 2016-03-31
Replaced By: Q4010LTHTP
TO-220 Isolated Tab1033434000.0121.6120700Check
Obsolete: 2016-03-31
Replaced By: Q4015LTTP
TO-220 Isolated Tab1533434000.0121.6200200Check
Obsolete: 2016-03-31
Replaced By: Q4015LTHTP
TO-220 Isolated Tab1533434000.0121.6200700Check
Obsolete: 2016-03-31
Replaced By: Q6004LTTP
TO-220 Isolated Tab433436000.0121.65550Check
Obsolete: 2016-03-31
Replaced By: Q6006LTTP
TO-220 Isolated Tab633436000.0121.68085Check
Obsolete: 2016-03-31
Replaced By: Q6006LTHTP
TO-220 Isolated Tab633436000.0121.680350Check
Obsolete: 2016-03-31
Replaced By: Q6008LTTP
TO-220 Isolated Tab833436000.0121.6100100Check
Obsolete: 2016-03-31
Replaced By: Q6008LTHTP
TO-220 Isolated Tab833436000.0121.6100350Check
Obsolete: 2016-03-31
Replaced By: Q6010LTTP
TO-220 Isolated Tab1033436000.0121.6120120Check
Obsolete: 2016-03-31
Replaced By: Q6010LTHTP
TO-220 Isolated Tab1033436000.0121.6120600Check
Obsolete: 2016-03-31
Replaced By: Q6015LTTP
TO-220 Isolated Tab1533436000.0121.6200150Check
Obsolete: 2016-03-31
Replaced By: Q6015LTHTP
TO-220 Isolated Tab1533436000.0121.6200600Check

Littelfuse Teccor Quadrac Device Datasheet

Contains all series electrical specifications.

Power Thyristor Databook Package Dimensions

Summary of all available package sizes and their corresponding dimensions.

Power Thyristor Databook Lead Form Options

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive, industrial, handheld, computer and telecom markets...

pdf icon Switching Thyristor Product Catalog