456 Series - NANO Very Fast-Acting Subminiature Surface Mount 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 High Current NANO Fuse is a small square surface mount fuse that is designed to support higher current requirements of various applications.


  • Surface mount high current fuse
  • Fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly
  • RoHS compliant and Halogen Free
  • Available in ratings of 20 to 40 Amperes


  • Voltage regulator module for PC server
  • Cooling fan system for PC server
  • Storage system power
  • Basestation power supply

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMin Operating Temp (°C)Max Operating Temp (°C)Marking CodeMSLNom
0456020.2065125180.0023300A@65VACCeramic-55125LF 20A164.7Very Fast-Acting (FF)10.10 x 3.12mmCheckOrder
0456025.2572125450.00192300A@65VACCeramic-55125LF 25A168.38Very Fast-Acting (FF)10.10 x 3.12mmCheckOrder
0456030.3065125810.00132300A@65VACCeramic-55125LF 30A169.9Very Fast-Acting (FF)10.10 x 3.12mmCheckOrder
0456040.40601910.00105600A@60VDCCeramic-55125LF 40A155Very Fast-Acting (FF)12.5 x 4.445mmCheckOrder
Catalog # Certificates
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0456020. URcsaMETILittelfuse_TUV_R50119318icon
0456025. URcsaMETILittelfuse_TUV_R50119318icon
0456030. URcsaMETILittelfuse_TUV_R50119318icon
0456040. URLittelfuse_TUV_R50119318icon

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