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.

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)
StockSamplesCompare
303005000010.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640CheckOrder
303005001310.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640CheckOrder
303005004210.051252.9250A@125VAC0.00007-2570MIL-STD-202 Method 10640CheckOrder
303006300010.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650CheckOrder
303006301310.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650CheckOrder
303006304210.0631251.19950A@125VAC0.00013-2570MIL-STD-202 Method 10650CheckOrder
303008000010.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660CheckOrder
303008001310.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660CheckOrder
303008004210.081252.2350A@125VAC0.0002-2570MIL-STD-202 Method 10660CheckOrder
303010000010.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670CheckOrder
303010001310.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670CheckOrder
303010004210.11254.3850A@125VAC0.0004-2570MIL-STD-202 Method 10670CheckOrder
303012500010.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685CheckOrder
303012501310.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685CheckOrder
303012504210.1251253.46150A@125VAC0.0022-2570MIL-STD-202 Method 10685CheckOrder
303016000010.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100CheckOrder
303016001310.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100CheckOrder
303016004210.1612550A@125VAC0.0029-2570MIL-STD-202 Method 106100CheckOrder
303020000010.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110CheckOrder
303020001310.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110CheckOrder
303020004210.21251.3550A@125VAC0.0042-2570MIL-STD-202 Method 106110CheckOrder
303025000010.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125CheckOrder
303025001310.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125CheckOrder
303025004210.251251.1550A@125VAC0.0082-2570MIL-STD-202 Method 106125CheckOrder
303031500010.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145CheckOrder
303031501310.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145CheckOrder
303031504210.3151250.96550A@125VAC0.015-2570MIL-STD-202 Method 106145CheckOrder
303040000010.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160CheckOrder
303040001310.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160CheckOrder
303040004210.41250.80550A@125VAC0.025-2570MIL-STD-202 Method 106160CheckOrder
303050000010.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190CheckOrder
303050001310.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190CheckOrder
303050004210.51250.53250A@125VAC0.042-2570MIL-STD-202 Method 106190CheckOrder
303063000010.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100CheckOrder
303063001310.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100CheckOrder
303063004210.631250.144850A@125VAC0.015-2570MIL-STD-202 Method 106100CheckOrder
303080000010.812550A@125VAC0.025-2570MIL-STD-202 Method 106125CheckOrder
303080001310.812550A@125VAC0.025-2570MIL-STD-202 Method 106125CheckOrder
303080004210.812550A@125VAC0.025-2570MIL-STD-202 Method 106125CheckOrder
3031100000111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155CheckOrder
3031100013111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155CheckOrder
3031100042111250.0834550A@125VAC0.039-2570MIL-STD-202 Method 106155CheckOrder
303112500011.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185CheckOrder
303112501311.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185CheckOrder
303112504211.2512550A@125VAC0.059-2570MIL-STD-202 Method 106185CheckOrder
303116000011.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225CheckOrder
303116001311.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225CheckOrder
303116004211.61250.05250A@125VAC0.11-2570MIL-STD-202 Method 106225CheckOrder
3031200000121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260CheckOrder
3031200013121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260CheckOrder
3031200042121250.0450A@125VAC0.17-2570MIL-STD-202 Method 106260CheckOrder
303125000012.512550A@125VAC0.23-2570MIL-STD-202 Method 106315CheckOrder
303125001312.512550A@125VAC0.23-2570MIL-STD-202 Method 106315CheckOrder
303125004212.512550A@125VAC0.23-2570MIL-STD-202 Method 106315CheckOrder
303131500013.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380CheckOrder
303131501313.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380CheckOrder
303131504213.1512550A@125VAC0.45-2570MIL-STD-202 Method 106380CheckOrder
30314000001412550A@125VAC1-2570MIL-STD-202 Method 106440CheckOrder
30314000131412550A@125VAC1-2570MIL-STD-202 Method 106440CheckOrder
30314000421412550A@125VAC1-2570MIL-STD-202 Method 106440CheckOrder
3031500000151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525CheckOrder
3031500013151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525CheckOrder
3031500042151250.013150A@125VAC1.5-2570MIL-STD-202 Method 106525CheckOrder

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