HQ6025xH5 Series - 25 Amp High Temperature Alternistor Triacs

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.

25 Amp bi-directional Alternistor Triac is designed for AC switching and phase control applications requiring a higher temperature environment.

Alternistor type devices only operate in quadrants I, II, & III and are used in circuits requiring high dv/dt capability.

Features & Benefits:

  • 150°C maximum junction temperature
  • RoHS compliant
  • Glass - passivated junctions
  • Voltage capability up to 600 V
  • Surge capability to 300 A


  • Typically used in high-temperature environments where available heat-sinking is minimal such as heating and white goods applications
  • Internally constructed isolated packages are offered for ease of heat sinking with highest isolation voltage

Access specifications, certifications, check availability and order parts below

Catalog #SizeIT(RMS) (A)VDRM
di/dt @
HQ6025KH5TPTO-218 Isolated Tab256000.0055050501.4300100CheckOrder
HQ6025LH5TPTO-220 Isolated Tab256000.0055050501.4300100CheckOrder
HQ6025NH5TO-263 (D2Pak)256000.0055050501.4300100CheckOrder
HQ6025RH5TPTO-220 Non-Isolated Tab256000.0055050501.4300100CheckOrder
Obsolete: 2008-09-01
Replaced By: HQ6025KH5TP
TO-218 Isolated Tab256000.0055050501.4300100Check
Obsolete: 2016-03-31
Replaced By: HQ6025LH5TP
TO-220 Isolated Tab256000.0055050501.4300100Check
Obsolete: 2016-03-31
Replaced By: HQ6025RH5TP
TO-220 Non-Isolated Tab256000.0055050501.4300100Check

pdf icon Switching Thyristors HQ6025xH5 Datasheet

25Amp bi-directional Alternistor Triac is designed for AC switching and phase control applications requiring a higher temperature environment...

Wuxi ISO TS16949 Certification

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