Primary Protection Pxxx3AC Series - Balanced Modified TO-220 SIDACtor® Device Series

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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. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The SIDACtor® Primary Protection Balanced Series Modified TO-220 are thyristor devices designed for use in primary protection applications.

The series provides a single port overvoltage solution that enables applications to comply with the balance requirements of GR-974 and GTS-8700. Please contact Littelfuse to discuss your particular application and regulatory requirements.

Features and Benefits:

  • High holding current options available
  • Failsafe option available
  • Low voltage overshoot
  • Low on-state voltage
  • Does not degrade with use
  • Fails short circuit when surged in excess of ratings
  • Single-port protection
  • Modified TO-220 Package
  • Lead forms available


  • UL 497
  • ITU K.28
  • GR-947
  • GTS-8700

Access specifications, certifications, check availability and order parts below

Catalog #VDRM T-R
SizePins T-RCO 2V
IscurrIDRM @
IH (mA)di/dt @
P1553ACL130180Modified TO-2201-360408005150500CheckOrder
P1803ACL150210Modified TO-2201-355358005150500CheckOrder
P2103ACL170250Modified TO-2201-355308005150500CheckOrder
P2353ACL200270Modified TO-2201-350308005150500CheckOrder
P2703ACL230300Modified TO-2201-350308005150500CheckOrder
P3203ACL270350Modified TO-2201-345258005150500CheckOrder
P3403ACL300400Modified TO-2201-345258005150500CheckOrder
P5103ACL420600Modified TO-2201-340208005150500CheckOrder
Obsolete: 2009-09-01
130180Modified TO-2201-360208005150500
Obsolete: 2009-09-01
150210Modified TO-2201-355158005150500
Obsolete: 2009-09-01
170250Modified TO-2201-355158005150500
Obsolete: 2009-09-01
200270Modified TO-2201-350158005150500
Obsolete: 2009-09-01
230300Modified TO-2201-350158005150500
Obsolete: 2009-09-01
270350Modified TO-2201-345158005150500
Obsolete: 2009-09-01
300400Modified TO-2201-345158005150500
Obsolete: 2009-09-01
420600Modified TO-2201-340108005150500

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