437A Series - 1206 AECQ-compliant Fuses

Roll Over to Zoom

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
BodyMin Operating Temp (°C)Max Operating Temp (°C)MSLOpeningStockSamplesCompare
0437.500A63630.0180.908Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437.750A63630.0640.6Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437001A63630.10.42Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437002A63630.1440.062Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437003A32320.5060.035Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437004A32321.0240.022Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
0437005A32322.3000.0159Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
043701.5A63630.3240.209Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
043702.5A32320.4410.043Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
043703.5A32320.7770.027Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
04371.25A63630.2560.318Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder
04371.75A63630.0750.071Ceramic Body-55150IPC/JEDEC J-STD-020C LEVEL 1Fast-Acting (F)CheckOrder

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.

pdf icon Fuse Accessories Selection Guide

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

pdf icon Fuse Selection Guide

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

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 Fuseholder Selection Guide

pdf icon Fuseology Selection Guide

Littelfuse Fuseology Selection Guide

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
0437.500WRA FUSE 63V FA 1206 .500A AECQ RoHS No 11/26/2017 PbFree No 11/26/2017 CoC_RoHS10_0437.500WRA_04-27-2021 REACH211_Declaration_0437.500WRA_04-27-2021 Yes
Does not Contain
0437.750WRA FUSE 63V FA 1206 .750A AECQ RoHS No 06/06/2008 PbFree No 06/22/2017 CoC_RoHS10_0437.750WRA_6-6-2019 REACH205_Declaration_0437.750WRA_06-19-2020 Yes
Does not Contain
0437001.WRA FUSE 63V FA 1206 1A AECQ RoHS No 06/06/2008 PbFree No 10/24/2016 CoC_RoHS10_0437001.WRA_10-13-2017 Yes
0437002.WRA FUSE 63V FA 1206 2A AECQ RoHS No 06/06/2008 PbFree No 10/15/2015 CoC_RoHS10_0437002.WRA_12-02-2020 REACH209_Declaration_0437002.WRA_12-02-2020 Yes
Does not Contain
0437003.WRA FUSE 32V FA 1206 3A AECQ RoHS No 07/29/2018 PbFree No 07/29/2018 CoC_RoHS10_0437003.WRA_8-10-2020 REACH209_Declaration_0437003.WRA_8-10-2020 Yes
Does not Contain
0437004.WRA FUSE 32V FA 1206 4A AECQ RoHS No 12/20/2017 PbFree No 12/20/2017 CoC_RoHS10_0437004.WRA_12-20-2017 Yes
0437005.WRA FUSE 32V FA 1206 5A AECQ RoHS No 06/06/2008 PbFree No 01/16/2019 CoC_RoHS10_0437005.WRA_09-20-2021 REACH219_Declaration_0437005.WRA_09-20-2021 Yes
Does not Contain
043702.5WRA FUSE 32V FA 1206 2.5A AECQ RoHS No 06/06/2008 PbFree No 10/24/2016 CoC_RoHS10_043702.5WRA_07-04-2020 Yes
043703.5WRA FUSE 32V FA 1206 3.5A AECQ RoHS No 12/12/2018 PbFree No 12/12/2018 CoC_RoHS10_043703.5WRA_02-12-2020 REACH205_Declaration_043703.5WRA_02-12-2020 Yes
Does not Contain
04371.25WRA FUSE 63V FA 1206 1.25A AECQ RoHS No 06/06/2008 PbFree No 08/15/2017 CoC_RoHS10_04371.25WRA_08-18-2017 Yes
04371.75WRA FUSE 63V FA 1206 1.75A AECQ RoHS No 11/22/2017 PbFree No 11/22/2017 CoC_RoHS10_04371.75WRA_11-23-2017 REACH197_Declaration_04371.75WRA_02-19-2019 Yes
Does not Contain
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.