303 Series - Micro™/TR3; Subminiature Fuses

p303
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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.

Features
  • Lead-free/RoHS Compliant
  • Reduced PCB space requirements
  • Direct solderable or plug-in versions
  • Internationally approved
  • Low internal resistance
  • Shocksafe casing
  • Vibration resistant

Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Resistance
(Ω)
Nominal Melting I2T (A2sec)Min Operating Temp (°C)Max Operating Temp (°C)MSLOpeningPartner ECAD ModelsStockSamplesCompare
303005000011252.920.00007-2570MIL-STD-202 Method 106Fast-Acting (F)30300500001CheckOrder
303005001311252.920.00007-2570MIL-STD-202 Method 106Fast-Acting (F)30300500131CheckOrder
303005004211252.920.00007-2570MIL-STD-202 Method 106Fast-Acting (F)30300500421CheckOrder
303006300011251.1990.00013-2570MIL-STD-202 Method 106Fast-Acting (F)30300630001CheckOrder
303006301311251.1990.00013-2570MIL-STD-202 Method 106Fast-Acting (F)30300630131CheckOrder
303006304211251.1990.00013-2570MIL-STD-202 Method 106Fast-Acting (F)30300630421CheckOrder
303008000011252.230.0002-2570MIL-STD-202 Method 106Fast-Acting (F)30300800001CheckOrder
303008001311252.230.0002-2570MIL-STD-202 Method 106Fast-Acting (F)30300800131CheckOrder
303008004211252.230.0002-2570MIL-STD-202 Method 106Fast-Acting (F)30300800421CheckOrder
303010000011254.380.0004-2570MIL-STD-202 Method 106Fast-Acting (F)30301000001CheckOrder
303010001311254.380.0004-2570MIL-STD-202 Method 106Fast-Acting (F)30301000131CheckOrder
303010004211254.380.0004-2570MIL-STD-202 Method 106Fast-Acting (F)30301000421CheckOrder
303012500011253.4610.0022-2570MIL-STD-202 Method 106Fast-Acting (F)30301250001CheckOrder
303012501311253.4610.0022-2570MIL-STD-202 Method 106Fast-Acting (F)30301250131CheckOrder
303012504211253.4610.0022-2570MIL-STD-202 Method 106Fast-Acting (F)30301250421CheckOrder
303016000011250.0029-2570MIL-STD-202 Method 106Fast-Acting (F)30301600001CheckOrder
303016001311250.0029-2570MIL-STD-202 Method 106Fast-Acting (F)30301600131CheckOrder
303016004211250.0029-2570MIL-STD-202 Method 106Fast-Acting (F)30301600421CheckOrder
303020000011251.350.0042-2570MIL-STD-202 Method 106Fast-Acting (F)30302000001CheckOrder
303020001311251.350.0042-2570MIL-STD-202 Method 106Fast-Acting (F)30302000131CheckOrder
303020004211251.350.0042-2570MIL-STD-202 Method 106Fast-Acting (F)30302000421CheckOrder
303025000011251.150.0082-2570MIL-STD-202 Method 106Fast-Acting (F)30302500001CheckOrder
303025001311251.150.0082-2570MIL-STD-202 Method 106Fast-Acting (F)30302500131CheckOrder
303025004211251.150.0082-2570MIL-STD-202 Method 106Fast-Acting (F)30302500421CheckOrder
303031500011250.9650.015-2570MIL-STD-202 Method 106Fast-Acting (F)30303150001CheckOrder
303031501311250.9650.015-2570MIL-STD-202 Method 106Fast-Acting (F)30303150131CheckOrder
303031504211250.9650.015-2570MIL-STD-202 Method 106Fast-Acting (F)30303150421CheckOrder
303040000011250.8050.025-2570MIL-STD-202 Method 106Fast-Acting (F)30304000001CheckOrder
303040001311250.8050.025-2570MIL-STD-202 Method 106Fast-Acting (F)30304000131CheckOrder
303040004211250.8050.025-2570MIL-STD-202 Method 106Fast-Acting (F)30304000421CheckOrder
303050000011250.5320.042-2570MIL-STD-202 Method 106Fast-Acting (F)30305000001CheckOrder
303050001311250.5320.042-2570MIL-STD-202 Method 106Fast-Acting (F)30305000131CheckOrder
303050004211250.5320.042-2570MIL-STD-202 Method 106Fast-Acting (F)30305000421CheckOrder
303063000011250.14480.015-2570MIL-STD-202 Method 106Fast-Acting (F)30306300001CheckOrder
303063001311250.14480.015-2570MIL-STD-202 Method 106Fast-Acting (F)30306300131CheckOrder
303063004211250.14480.015-2570MIL-STD-202 Method 106Fast-Acting (F)30306300421CheckOrder
303080000011250.025-2570MIL-STD-202 Method 106Fast-Acting (F)30308000001CheckOrder
303080001311250.025-2570MIL-STD-202 Method 106Fast-Acting (F)30308000131CheckOrder
303080004211250.025-2570MIL-STD-202 Method 106Fast-Acting (F)30308000421CheckOrder
303110000011250.083450.039-2570MIL-STD-202 Method 106Fast-Acting (F)30311000001CheckOrder
303110001311250.083450.039-2570MIL-STD-202 Method 106Fast-Acting (F)30311000131CheckOrder
303110004211250.083450.039-2570MIL-STD-202 Method 106Fast-Acting (F)30311000421CheckOrder
303112500011250.059-2570MIL-STD-202 Method 106Fast-Acting (F)30311250001CheckOrder
303112501311250.059-2570MIL-STD-202 Method 106Fast-Acting (F)30311250131CheckOrder
303112504211250.059-2570MIL-STD-202 Method 106Fast-Acting (F)30311250421CheckOrder
303116000011250.0520.11-2570MIL-STD-202 Method 106Fast-Acting (F)30311600001CheckOrder
303116001311250.0520.11-2570MIL-STD-202 Method 106Fast-Acting (F)30311600131CheckOrder
303116004211250.0520.11-2570MIL-STD-202 Method 106Fast-Acting (F)30311600421CheckOrder
303120000011250.040.17-2570MIL-STD-202 Method 106Fast-Acting (F)30312000001CheckOrder
303120001311250.040.17-2570MIL-STD-202 Method 106Fast-Acting (F)30312000131CheckOrder
303120004211250.040.17-2570MIL-STD-202 Method 106Fast-Acting (F)30312000421CheckOrder
303125000011250.23-2570MIL-STD-202 Method 106Fast-Acting (F)30312500001CheckOrder
303125001311250.23-2570MIL-STD-202 Method 106Fast-Acting (F)30312500131CheckOrder
303125004211250.23-2570MIL-STD-202 Method 106Fast-Acting (F)30312500421CheckOrder
303131500011250.45-2570MIL-STD-202 Method 106Fast-Acting (F)30313150001CheckOrder
303131501311250.45-2570MIL-STD-202 Method 106Fast-Acting (F)30313150131CheckOrder
303131504211250.45-2570MIL-STD-202 Method 106Fast-Acting (F)30313150421CheckOrder
303140000011251-2570MIL-STD-202 Method 106Fast-Acting (F)30314000001CheckOrder
303140001311251-2570MIL-STD-202 Method 106Fast-Acting (F)30314000131CheckOrder
303140004211251-2570MIL-STD-202 Method 106Fast-Acting (F)30314000421CheckOrder
303150000011250.01311.5-2570MIL-STD-202 Method 106Fast-Acting (F)30315000001CheckOrder
303150001311250.01311.5-2570MIL-STD-202 Method 106Fast-Acting (F)30315000131CheckOrder
303150004211250.01311.5-2570MIL-STD-202 Method 106Fast-Acting (F)30315000421CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
30300500421 FUSE 125V FA TR3 SL .050A RoHS No PbFree No CoC_RoHS10_30300500421_03-31-2017 No
04/20/2007
30300800001 FUSE 125V FA TR3 LL AMMO .080A RoHS No PbFree No CoC_RoHS10_30300800001_08-28-2018 REACH191_Declaration_30300800001_08-28-2018 No
04/20/2007
Does not Contain
30300800131 FUSE 125V FA TR3 LL .080A RoHS No PbFree No CoC_RoHS10_30300800131_08-28-2018 REACH191_Declaration_30300800131_08-28-2018 No
04/20/2007
Does not Contain
30300800421 FUSE 125V FA TR3 SL .080A RoHS No PbFree No CoC_RoHS10_30300800421_08-28-2018 REACH191_Declaration_30300800421_08-28-2018 No
04/20/2007
Does not Contain
30301000131 FUSE 125V FA TR3 LL .100A RoHS No PbFree No CoC_RoHS10_30301000131_10-05-2020 REACH209_Declaration_30301000131_10-05-2020 No
04/20/2007
Does not Contain
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pdf icon Fuse 303 Datasheet

The 303 Series are TR3®, fast-acting type, 125V rated fuses designed in accordance to UL 248–14...

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Littelfuse_Mexico_PiedrasNegras_ISO14001icon 2021-02-14_ISO 14001 2015_Piedras Negras Mexico

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