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 #Amps (A)VDC (V)VAC (V)Resistance
(Ω)
Interrupting RatingNominal Melting I2T (A2sec)Min Operating Temp °CMax Operating Temp (°C)MSLNom
Power
Dissipation
(W)
Nom
Voltage
Drop
(mV)
OpeningSizeStockSamplesCompare
303005000010.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640800Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303005001310.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640800Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303005004210.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640800Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303006300010.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650780Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303006301310.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650780Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303006304210.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650780Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303008000010.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660730Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303008001310.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660730Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303008004210.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660730Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303010000010.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670700Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303010001310.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670700Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303010004210.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670700Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303012500010.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685650Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303012501310.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685650Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303012504210.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685650Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303016000010.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100600Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303016001310.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100600Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303016004210.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100600Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303020000010.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110550Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303020001310.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110550Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303020004210.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110550Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303025000010.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125500Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303025001310.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125500Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303025004210.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125500Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303031500010.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145450Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303031501310.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145450Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303031504210.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145450Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303040000010.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160400Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303040001310.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160400Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303040004210.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160400Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303050000010.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190380Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303050001310.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190380Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303050004210.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190380Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303063000010.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100160Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303063001310.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100160Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303063004210.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100160Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303080000010.812550A@125VAC0.025-2570MIL-STD-202 Method 106125155Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303080001310.812550A@125VAC0.025-2570MIL-STD-202 Method 106125155Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303080004210.812550A@125VAC0.025-2570MIL-STD-202 Method 106125155Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031100000111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155150Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031100013111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155150Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031100042111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155150Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303112500011.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185145Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303112501311.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185145Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303112504211.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185145Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303116000011.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225140Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303116001311.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225140Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303116004211.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225140Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031200000121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260130Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031200013121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260130Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031200042121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260130Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303125000012.512550A@125VAC0.23-2570MIL-STD-202 Method 106315125Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303125001312.512550A@125VAC0.23-2570MIL-STD-202 Method 106315125Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303125004212.512550A@125VAC0.23-2570MIL-STD-202 Method 106315125Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303131500013.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380120Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303131501313.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380120Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
303131504213.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380120Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
30314000001412550A@125VAC1-2570MIL-STD-202 Method 106440110Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
30314000131412550A@125VAC1-2570MIL-STD-202 Method 106440110Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
30314000421412550A@125VAC1-2570MIL-STD-202 Method 106440110Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031500000151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525105Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031500013151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525105Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder
3031500042151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525105Fast-Acting (F)TR3/MICRO (6x8mm)CheckOrder

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LittelfusePiedrasNegrasTS16949 2009icon 2020-10-20_IATF 16949_Piedras Negras Mexico

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

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