253 Series - PICO® II Very Fast-Acting Military Spec. Subminiature Axial Leaded Fuse

Fuse 251 253 Hi_Res
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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® 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 #VAC (V)VDC (V)Nominal Melting I2T (A2sec)Resistance
OpeningOperating TemperatureStockSamplesCompare
0253.0621251250.0001137Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253.1251251250.001741.7Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253.2501251250.01160.665Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253.3751251250.02960.395Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253.5001251250.05980.303Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253.7501251250.1530.175Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253001.1251250.2560.128Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253002.1251250.4050.0473Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253003.1251251.190.0295Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253004.1251252.450.0204Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253005.1251254.140.0158Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253007.12512510.40.0107Very Fast-Acting (FF)-55° to 125°CCheckOrder
025301.5323268.8000030.00446Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253010.12512525.50.0072Very Fast-Acting (FF)-55° to 125°CCheckOrder
0253015.323268.8000030.00446Very Fast-Acting (FF)-55° to 125°CCheckOrder
R253.0621251250.0001137Very Fast-Acting (FF)-55° to 125°CCheck
R253.1251251250.001741.7Very Fast-Acting (FF)-55° to 125°CCheck
R253.2501251250.01160.665Very Fast-Acting (FF)-55° to 125°CCheck
R253.3751251250.02960.395Very Fast-Acting (FF)-55° to 125°CCheck
R253.5001251250.05980.303Very Fast-Acting (FF)-55° to 125°CCheck
R253.7501251250.1530.175Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253001.
1251250.2560.128Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253002.
1251250.4050.0473Very Fast-Acting (FF)-55° to 125°CCheck
R253003.1251251.190.0295Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253004.
1251252.450.0204Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253005.
1251254.140.0158Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253007.
12512510.40.0107Very Fast-Acting (FF)-55° to 125°CCheck
R25301.51251250.5870.0823Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253010.
12512525.50.0072Very Fast-Acting (FF)-55° to 125°CCheck
Replaced By: 0253015. 025301.5
323268.8000030.00446Very Fast-Acting (FF)-55° to 125°CCheck
To request product environmental information, please complete the Product Environmental Information Request Form.

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