451 Series - NANO2® Fast-Acting Subminiature Surface Mount Fuse

Series: 451
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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 Nano2® 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.

Features:

  • 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

Applications:

  • Notebook PC
  • LCD/PDP TV
  • 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




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Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
(Ω)		BodyMSLOpeningOperating TemperaturePartner ECAD ModelsStockSamplesCompare
045102065651540.00244CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451020CheckOrder
0451.0621251250.000195.5CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.062Order
0451.0801251250.000334.05CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.080CheckOrder
0451.1001251250.001383.1CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.100CheckOrder
0451.1251251250.6640.078CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.125Order
0451.1601251250.00481.2157CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.160CheckOrder
0451.2001251250.00890.8372CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.200CheckOrder
0451.2501251250.01580.5765CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.250CheckOrder
0451.3151251251.920.0215CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.315Order
0451.3751251250.04420.4541CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.375CheckOrder
0451.4001251250.05510.4233CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.400CheckOrder
0451.5001251250.08240.3046CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.500CheckOrder
0451.6301251250.13810.2022CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.630CheckOrder
0451.7501251250.21430.1444CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.750Order
0451.8001251250.26540.1355CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451.800CheckOrder
0451001.1251250.60290.078CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451001.CheckOrder
0451002.1251250.530.0367CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451002.CheckOrder
0451003.1251251.650.0227CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451003.CheckOrder
0451004.1251253.1520.016CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451004.CheckOrder
0451005.1251255.5660.0125CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451005.CheckOrder
0451007.12512510.320.009CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451007.CheckOrder
0451008.12512520.230.0077CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451008.CheckOrder
045101.51251250.8530.063CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C045101.5CheckOrder
045101.61251251.060.058CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C045101.6CheckOrder
0451010.12512526.460.0056CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451010.Order
0451012.656547.970.0049CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451012.Order
0451015.1251250.8530.063CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C0451015.CheckOrder
045102.51251251.0290.0286CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C045102.5CheckOrder
045103.51251252.4690.02CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C045103.5CheckOrder
045106.31251259.170.0096CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C045106.3CheckOrder
04511.251251250.6640.078CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C04511.25CheckOrder
04513.151251251.920.0215CeramicLevel 1Very Fast-Acting (FF)-55° to 125°C04513.15CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0451020.MRSN FUSE 65V V/FA NANO2 Sn-DIP ROHS 20A RoHS No 06/09/2015 PbFree No Yes
06/09/2015
0451020.MRL FUSE 65V V/FA NANO2 W/Au Caps ROHS 20A RoHS No 01/12/2004 PbFree No 02/23/2016 Yes
02/23/2016
0451.062MR FUSE 125V V/FA NANO2 W/Ag CAPS .062A RoHS No 09/23/2011 PbFree No Yes
09/23/2011
0451.062NR FUSE 125V V/FA NANO2 W/Ag CAPS .062A RoHS No 01/12/2004 PbFree No Yes
0451.062MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.062A RoHS No 01/12/2004 PbFree No Yes
0451.080NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.080A RoHS No 01/12/2004 PbFree No Yes
0451.080MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.080A RoHS No 01/12/2004 PbFree No Yes
0451.080MR FUSE 125V V/FA NANO2 W/Ag CAPS .080A RoHS No 01/12/2004 PbFree No Yes
0451.100NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.100A RoHS No 01/12/2004 PbFree No Yes
0451.100MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.100A RoHS No 01/12/2004 PbFree No Yes
0451.100MR FUSE 125V V/FA NANO2 W/Ag CAPS .100A RoHS No 01/12/2004 PbFree No Yes
0451.125NR FUSE 125V V/FA NANO2 W/Ag CAPS .125A RoHS No 01/12/2004 PbFree No Yes
0451.125MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.125A RoHS No 01/12/2004 PbFree No
0451.125MR FUSE 125V V/FA NANO2 W/Ag CAPS .125A RoHS No 01/12/2004 PbFree No Yes
0451.125NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.125A RoHS No 01/12/2004 PbFree No Yes
0451.160MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.160A RoHS No 01/12/2004 PbFree No Yes
0451.160NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.160A RoHS No 01/12/2004 PbFree No Yes
0451.200MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.200A RoHS No 01/12/2004 PbFree No Yes
0451.200NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.200A RoHS No 01/12/2004 PbFree No Yes
0451.250MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.250A RoHS No 01/12/2004 PbFree No Yes
0451.250NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.250A RoHS No 01/12/2004 PbFree No Yes
0451.315MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.315A RoHS No 01/12/2004 PbFree No Yes
0451.315NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.315A RoHS No 01/12/2004 PbFree No Yes
0451.375MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.375A RoHS No 01/12/2004 PbFree No Yes
0451.375NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.375A RoHS No 01/12/2004 PbFree No Yes
0451.400NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.400A RoHS No 01/12/2004 PbFree No Yes
0451.400MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.400A RoHS No 01/12/2004 PbFree No Yes
0451.500NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.500A RoHS No 01/12/2004 PbFree No Yes
0451.500MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.500A RoHS No 01/12/2004 PbFree No Yes
01/12/2004
0451.630NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.630A RoHS No 01/12/2004 PbFree No Yes
0451.630MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.630A RoHS No 01/12/2004 PbFree No Yes
0451.750NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.750A RoHS No 01/12/2004 PbFree No Yes
0451.750MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.750A RoHS No 01/12/2004 PbFree No Yes
0451.800NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.800A RoHS No 01/12/2004 PbFree No Yes
0451.800MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS.800A RoHS No 01/12/2004 PbFree No Yes
0451001.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1A RoHS No 01/12/2004 PbFree No
0451001.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1A RoHS No 01/12/2004 PbFree No Yes
0451002.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 2A RoHS No 01/12/2004 PbFree No Yes
0451002.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 2A RoHS No 01/12/2004 PbFree No Yes
0451003.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 3A RoHS No 01/12/2004 PbFree No Yes
0451003.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 3A RoHS No 01/12/2004 PbFree No Yes
0451004.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 4A RoHS No 01/12/2004 PbFree No Yes
0451004.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 4A RoHS No 01/12/2004 PbFree No Yes
0451005.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 5A RoHS No 01/12/2004 PbFree No Yes
0451005.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 5A RoHS No 01/12/2004 PbFree No Yes
0451007.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 7A RoHS No 01/12/2004 PbFree No Yes
0451007.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 7A RoHS No 01/12/2004 PbFree No Yes
0451008.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 8A RoHS No 01/12/2004 PbFree No Yes
0451008.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 8A RoHS No 01/12/2004 PbFree No Yes
045101.5MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1.5A RoHS No 01/12/2004 PbFree No Yes
045101.5NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1.5A RoHS No 01/12/2004 PbFree No Yes
045101.6NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1.6A RoHS No 01/12/2004 PbFree No Yes
045101.6MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 1.6A RoHS No 01/12/2004 PbFree No Yes
0451010.MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 10A RoHS No 01/12/2004 PbFree No Yes
0451010.NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 10A RoHS No 01/12/2004 PbFree No Yes
0451012.MRL FUSE 65V V/FA NANO2 W/Au CAPS RoHS 12A RoHS No 01/12/2004 PbFree No Yes
0451012.NRL FUSE 65V V/FA NANO2 W/Au CAPS RoHS 12A RoHS No 01/12/2004 PbFree No Yes
0451015.MRL FUSE 65V V/FA NANO2 W/Au CAPS RoHS 15A RoHS No 01/12/2004 PbFree No Yes
0451015.NRL FUSE 65V V/FA NANO2 W/Au CAPS RoHS 15A RoHS No 01/12/2004 PbFree No Yes
045102.5MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 2.5A RoHS No 01/12/2004 PbFree No
045103.5MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 3.5A RoHS No 01/12/2004 PbFree No Yes
045103.5NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 3.5A RoHS No 01/12/2004 PbFree No Yes
045106.3NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 6.3A RoHS No 01/12/2004 PbFree No Yes
045106.3MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS 6.3A RoHS No 01/12/2004 PbFree No Yes
04511.25MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS1.25A RoHS No 01/12/2004 PbFree No Yes
04511.25NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS1.25A RoHS No 01/12/2004 PbFree No Yes
04513.15MRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS3.15A RoHS No 01/12/2004 PbFree No Yes
04513.15NRL FUSE 125V V/FA NANO2 W/Au CAPS RoHS3.15A RoHS No 01/12/2004 PbFree No Yes
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