PICO II 521 Series Series - PICO II 521 Series Very Fast Acting 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 0521 PICO® II Very Fast-Acting Fuse Series is an AEC-Q200 qualified fuse designed to meet an extensive array of performance characteristics in a space-saving sub-miniature package.


  • Very fast-acting
  • Small size
  • AEC-Q200 qualified
  • Applicable in wire harness application
  • Wide operating temperature range
  • Low temperature re-rating


  • Battery Management System protection

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Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VibrationNominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMSLNom
5210022MIL-STD-202 Method 204 10-2000-10 Hz vibration traversed in 20 minutes with 5g peak for 12 cycles in 3 planes0.4050.0473300A @ 75V DCCeramicNot Applicable0.141Very Fast-Acting (FF)CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0521002.YAT1L FUSE 75V FA PICO II 2A AECQ RoHS No 06/01/2021 PbFree No 06/01/2021 CoC_RoHS9_0521002.YAT1L Yes
0521002.MAT1L FUSE 75V FA PICO II 2A AECQ RoHS No 06/01/2021 PbFree No 06/01/2021 Yes
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