422004A - 422A Series

Series: 422A
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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 422A is a 250 V rated Wire-in-Air Surface Mount AECQ-compliant fuse are specifically tested to cater to secondary circuit protection needs of compact auto electronics applications. The wire-in-air design of the 422A Series results in a relatively high I²t in a 2410 size.


  • Operating Temperature from -55° C to 125° C
  • 100% Lead-free, Halogen-free and RoHS compliant
  • Fast acting
  • Meets Littelfuse's automotive qualification*
  • Recognized to UL/CSA/NMX 248-1 and UL/CSA/NMX 248-14
  • Conforms to EN/IEC 60127-1 and EN/IEC 60127-7
  • Conforms to J60127-1 and J60127-7

* Largely based on Littelfuse internal AEC-Q200 test plan for DC application.


  • Li-Ion Battery
  • LED Lighting Automotive Navigation System
  • Battery Management System (BMS)
  • Cluster
Property (Mouseover for details) Value
Body Epoxy Substrate
Nominal Melting I2T (A2sec) 3.6
Nominal Cold Resistance (Ohms) 0.0168
Opening Fast-Acting (F)
Operating Temperature -55° to 125°C
Partner ECAD Models 422004A
To request product environmental information, please complete the Product Environmental Information Request Form.