453 Series - NANO Very Fast-Acting Subminiature Surface Mount 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.

The Nano SMF Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse which is very suitable for the secondary side circuit over-current protection applications and is designed for PCB using surface mount technology.


  • Very fast acting
  • Small size
  • Wide range of current rating available (0.062A to 20A)
  • Wide operating temperature range
  • Low temperature rerating
  • RoHS compliant and Halogen Free


  • Notebook PC
  • LCD monitor
  • LCD/PDP panel
  • LCD backlight inverter
  • Portable DVD player
  • Power supply
  • Networking
  • PC server
  • Cooling fan system
  • Storage system
  • Telecom system
  • Wireless basestation
  • White goods
  • Game console
  • Office Automation equipment
  • Battery charging circuit protection
  • Industrial equipment

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 °CMax Operating Temp (°C)Marking CodeStockSamplesCompare
04530202065651540.00244400A@32VDCCeramic-5512520A LFCheckOrder
453.0620.0621251250.000195.5300A@32VDCCeramic-5512562mA LFCheckOrder
453.080.081251250.000334.05300A@32VDCCeramic-5512580mA LFCheckOrder
453.10.11251250.001383.1300A@32VDCCeramic-55125100mA LFCheckOrder
453.1250.1251251250.002861.7300A@32VDCCeramic-55125125mA LFCheckOrder
0453.1600.161251250.00481.2157300A@32VDCCeramic-55125160mA LFCheckOrder
0453.2000.21251250.00890.8372300A@32VDCCeramic-55125200mA LFCheckOrder
0453.2500.251251250.01580.5765300A@32VDCCeramic-55125250mA LFCheckOrder
0453.3150.3151251250.03110.3918300A@32VDCCeramic-55125315mA LFCheckOrder
0453.3750.3751251250.04420.4541300A@32VDCCeramic-55125375mA LFCheckOrder
0453.4000.41251250.05510.4233300A@32VDCCeramic-55125400mA LFCheckOrder
0453.5000.51251250.08240.3046300A@32VDCCeramic-55125500mA LFCheckOrder
0453.6300.631251250.13810.2022300A@32VDCCeramic-55125630mA LFCheckOrder
0453.7500.751251250.21430.1444300A@32VDCCeramic-55125750mA LFCheckOrder
0453.8000.81251250.26540.1355300A@32VDCCeramic-55125800mA LFCheckOrder
045300111251250.60290.078300A@32VDCCeramic-551251A LFCheckOrder
045300221251250.530.0367300A@32VDCCeramic-551252A LFCheckOrder
045300331251251.650.0227300A@32VDCCeramic-551253A LFCheckOrder
045300441251253.1520.016300A@32VDCCeramic-551254A LFCheckOrder
045300551251255.5660.0125300A@32VDCCeramic-551255A LFCheckOrder
0453007712512510.320.009400A@32VDCCeramic-551257A LFCheckOrder
0453008812512520.230.0077400A@32VDCCeramic-551258A LFCheckOrder
045301.51.51251250.8530.063300A@32VDCCeramic-551251.5A LFCheckOrder
045301.61.61251251.060.058300A@32VDCCeramic-551251.6A LFCheckOrder
04530101012512526.460.0056400A@32VDCCeramic-5512510A LFCheckOrder
045301212656547.970.0049400A@32VDCCeramic-5512512A LFCheckOrder
045301515656597.820.0037400A@32VDCCeramic-5512515A LFCheckOrder
045302.52.51251251.0290.0286300A@32VDCCeramic-551252.5A LFCheckOrder
045303.53.51251252.4690.02300A@32VDCCeramic-551253.5A LFCheckOrder
045306.36.31251259.170.0096400A@32VDCCeramic-551256.3A LFCheckOrder
04531.251.251251250.6640.078300A@32VDCCeramic-551251.25A LFCheckOrder
04533.153.151251251.920.0215300A@32VDCCeramic-551253.15A LFCheckOrder

451 Series Time Curve Data

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