437A Series - 1206 AECQ-compliant Fuses

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

The 437A series AECQ-Compliant fuses are specifically tested to cater to secondary circuit protection needs of compact auto-electronics applications.


  • AECQ-Compliant
  • Fast response to faulty current to ensure over-current protection to sensitive electronic component.
  • Operating Temperature  from -55°C to +150°C
  • 100%  Lead-free, Halogen-Free and RoHS compliant


  • Li-ion Battery
  • LED Head-Lights
  • Navigation
  • TFT display
  • BMS

Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
BodyMSLOpeningOperating TemperaturePartner ECAD ModelsStockSamplesCompare
0437.500A63630.0180.908CeramicIPC/JEDEC J-STD-020C Level 1Fast-Acting (F)-55° to 150°C0437.500ACheckOrder
0437.750A63630.0640.6CeramicFast-Acting (F)-55° to 150°C0437.750ACheckOrder
0437001A63630.10.42CeramicFast-Acting (F)-55° to 150°C0437001ACheckOrder
0437002A63630.1440.062CeramicFast-Acting (F)-55° to 150°C0437002ACheckOrder
0437003A32320.5060.035CeramicFast-Acting (F)-55° to 150°C0437003ACheckOrder
0437004A32321.0240.022CeramicIPC/JEDEC J-STD-020C Level 1Fast-Acting (F)-55° to 150°C0437004ACheckOrder
0437005A32322.30.0159CeramicIPC/JEDEC J-STD-020C Level 1Fast-Acting (F)-55° to 150°C0437005ACheckOrder
043701.5A63630.3240.209CeramicFast-Acting (F)-55° to 150°C043701.5ACheckOrder
043702.5A32320.4410.043CeramicFast-Acting (F)-55° to 150°C043702.5ACheckOrder
043703.5A32320.7770.027CeramicFast-Acting (F)-55° to 150°C043703.5ACheckOrder
04371.25A63630.2560.318CeramicFast-Acting (F)-55° to 150°C04371.25ACheckOrder
04371.75A63630.0750.071CeramicFast-Acting (F)-55° to 150°C04371.75ACheckOrder

pdf icon Battery Disconnect and Protection

pdf icon Electric Two-/Three-Wheeler Solutions

pdf icon ESD Protection Solutions

pdf icon xEV power train

pdf icon Automotive Electronics Applications Guide

This guide provides a summary of key circuit protection consideration factors, descriptions of the technologies Littelfuse offers, and product selection tables. It is designed to help you quickly find a protection solution appropriate to your application.

pdficon Fuse Accessories Selection Guide

A quick reference guide to selecting holders blocks and clips for fuse applications...

pdficon Fuse Selection Guide

A quick reference guide to selecting fuses for electronic applications...

pdficon Product Selection Guide

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

pdficon 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...

pdficon Fuseholder Selection Guide

pdficon Fuseology Selection Guide

Littelfuse Fuseology Selection Guide

pdficon Littelfuse Fuse 437A Datasheet

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0437.500WRA FUSE 63V FA 1206 .500A AECQ RoHS No 11/26/2017 PbFree No 11/26/2017 CoC_RoHS10_0437.500WRA REACH_SVHC Declaration_0437.500WRA Yes
Does not Contain IPC_0437WRA_-0.500A-1.5A
0437.750WRA FUSE 63V FA 1206 0.750A AECQ RoHS No 06/06/2008 PbFree No 06/22/2017 CoC_RoHS10_0437.750WRA REACH205_Declaration_0437.750WRA Yes
Does not Contain
0437001.WRA FUSE 63V FA 1206 1A AECQ RoHS No 06/06/2008 PbFree No 10/24/2016 Yes
0437002.WRA FUSE 63V FA 1206 2A AECQ RoHS No 06/06/2008 PbFree No 10/15/2015 CoC_RoHS10_0437002.WRA REACH209_Declaration_0437002.WRA Yes
Does not Contain IPC_0437002.WRA
0437003.WRA FUSE 32V FA 1206 3A AECQ RoHS No 07/29/2018 PbFree No 07/29/2018 CoC_RoHS10_0437003.WRA REACH209_Declaration_0437003.WRA Yes
Does not Contain IPC_0437003.WRA
0437004.WRA FUSE 32V FA 1206 4A AECQ RoHS No 12/20/2017 PbFree No 12/20/2017 REACH219_Declaration_0437004.WRA Yes
Does not Contain IPC_0437004.WRA
0437005.WRA FUSE 32V FA 1206 5A AECQ RoHS No 06/06/2008 PbFree No 01/16/2019 CoC_RoHS10_0437005.WRA REACH219_Declaration_0437005.WRA Yes
Does not Contain IPC_0437005.WRA
043701.5WRA FUSE 63V FA 1206 1.5A AECQ RoHS No 06/06/2008 PbFree No 02/26/2019 Yes
043702.5WRA FUSE 32V FA 1206 2.5A AECQ RoHS No 06/06/2008 PbFree No 10/24/2016 CoC_RoHS10_043702.5WRA Yes
043703.5WRA FUSE 32V FA 1206 3.5A AECQ RoHS No 12/12/2018 PbFree No 12/12/2018 CoC_RoHS10_043703.5WRA REACH205_Declaration_043703.5WRA Yes
Does not Contain IPC_043703.5WRA
04371.25WRA FUSE 63V FA 1206 1.25A AECQ RoHS No 06/06/2008 PbFree No 08/15/2017 CoC_RoHS10_04371.25WRA REACH219_Declaration_04371.25WRA Yes
Does not Contain IPC_04371.25WRA
04371.75WRA FUSE 63V FA 1206 1.75A AECQ RoHS No 11/22/2017 PbFree No 11/22/2017 Yes
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.