275 Series - PICO® Very Fast-Acting Subminiature Axial Leaded Fuse

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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.

The PICO® Very Fast-Acting Fuse is designed to meet an 
extensive array of performance characteristics in a 
space-saving subminiature package.


  • Very fast-acting
  • Small size
  • High current rating (20A- 30A)
  • RoHS compliant
  • Wide operating temperature range
  • Low temperature derating

Access specifications, certifications, check availability and order parts below

Catalog #VAC (V)VDC (V)Nominal Melting I2T (A2sec)Resistance
Max Operating Temp (°C)Min Operating Temp (°C)BodyMSLOpeningPartner ECAD ModelsStockSamplesCompare
0275020.32322030.0033125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275020Check
0275025.32323080.0024125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275025Check
0275030.32325040.002125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275030Check
Obsolete: 2007 -10-18
Replaced By: 0251.062MXL
1251250.0001137125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_062CheckOrder
Obsolete: 2007 -10-18
1251250.001741.7125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_125CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251.250MXL
1251250.01160.665000021125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_25CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251.375HAT1L
1251250.02960.395000011125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_375CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251.500MXL
1251250.05980.280000001125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_5CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251.750HAT1L
1251250.1760.174999997125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275_75CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251001.MXL
1251250.2560.128000006125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275001CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251002.NAT1L
1251250.4050.0473125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275002CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251003.HAT1L
1251251.190.028999999125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275003CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251004.MXL
1251252.450.020400001125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275004CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251005.HAT1L
1251254.140.0155125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275005CheckOrder
Obsolete: 2007 -10-18
Replaced By: 0251007.MXL
12512510.40.0105125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275007CheckOrder
Obsolete: 2006 -04-12
Replaced By: 025101.5HAT1L
1251250.5870.0823125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)27501_5CheckOrder
Obsolete: 2008 -05-01
Replaced By: 0251010.HAT1L
12512525.50.00705125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275010CheckOrder
Obsolete: 2004 -06-03
Replaced By: 0251012.MXL
323245.2000010.005125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275012CheckOrder
Obsolete: 2004 -06-03
Replaced By: 0251015.HAT1L
323268.8000030.00446125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)275015CheckOrder
Obsolete: 2007 -10-18
Replaced By: 025102.5HAT1L
1251250.7210.035999998125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)27502_5CheckOrder
Obsolete: 2007 -10-18
Replaced By: 025103.5NAT1L
1251251.580.024125-55Ceramic BodyMIL-STD-202 Method 106.Very Fast-Acting (FF)27503_5CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
0275020.MRT1L FUSE 32V PICO I FA RoHS 20A RoHS No 02/27/2002 PbFree No 02/27/2002 CoC_REACh181_0275020.MRT1L_04-10-2018 Yes
0275020.MXL FUSE 32V PICO I FA RoHS 20A RoHS No 02/27/2002 PbFree No 02/27/2002 CoC_RoHS9_0275020.MXL_08-22-2019 REACH205_Declaration_with_Pb_0275020.MXL_02-20-2020 Yes
0275025.MRT1L FUSE 32V PICO I FA RoHS 25A RoHS No 02/27/2002 PbFree No 02/27/2002 CoC_RoHS9_0275025.MRT1L_07-21-2017 No
027502.5MAT1- FUSE 125V PICO I FA AMMO 2.5A RoHS No 02/27/2002 PbFree No 02/27/2002 No
0275030.MRT1L FUSE 32V PICO I FA RoHS 30A RoHS No 02/27/2002 PbFree No 02/27/2002 CoC_RoHS9_0275030.MRT1L_09-12-2017
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275 ECAD Models