251 Series - PICO® II Very Fast-Acting Subminiature Axial leaded fuse

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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® II 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
  • Wide current rating range (62mA- 15A)
  • RoHS compliant 
  • Halogen-free available 
  • Wide operating temperature range
  • Low temperature rerating


Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMSLNom
0251.0620.0621251250.0001137300A@125VDCCeramic BodyMIL-STD-202 Method 106.1.4Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251.1250.1251251250.001741.7Ceramic BodyMIL-STD-202 Method 106.0.285Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251.2000.21251250.895Ceramic BodyMIL-STD-202 Method 106.0.265Very Fast-Acting (FF)2.80 x 7.11mmCheck
0251.2500.251251250.01160.665000021300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.24Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251.3750.3751251250.02960.395000011300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.215Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251.5000.51251250.05980.280000001300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.2165Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
251_6300'.631251250.080.205300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.188Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251.7500.751251250.1760.174999997300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.155Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251001.11251250.2560.128000006300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.194Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251002.21251250.4050.0473300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.141Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251003.31251251.190.028999999300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.131Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251004.41251252.450.020400001300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.114Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251005.51251254.140.0155300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.1Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251007.712512510.40.0105300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.1045Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
025101.51.51251250.5870.0823300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.21Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
025101.61.61251250.07Ceramic BodyMIL-STD-202 Method 106.0.218Very Fast-Acting (FF)2.80 x 7.11mmCheck
0251010.1012512525.50.00705300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.1Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
0251012.12323245.2000010.005300A@32VDCCeramic BodyMIL-STD-202 Method 106.0.4048Very Fast-Acting (FF)2.80 x 7.11mmCheck
0251015.2.51251250.7210.035999998300A@32VDCCeramic BodyMIL-STD-202 Method 106.0.132Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
025102.52.51251250.7210.035999998300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.132Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
025103.53.51251251.580.024300A@125VDCCeramic BodyMIL-STD-202 Method 106.0.1205Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
02511.251.251251250.390.100000001Ceramic BodyMIL-STD-202 Method 106.0.2Very Fast-Acting (FF)2.80 x 7.11mmCheckOrder
02513.153.151251250.0364Ceramic BodyMIL-STD-202 Method 106.0.129Very Fast-Acting (FF)2.80 x 7.11mmCheck

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