449 Series - Lead-Free NANO2® SLO-BLO® Subminiature Surface Mount Fuse

Series: 449
Fuse 449 Image
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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 lead free NANO2® Slo-Blo® fuse is RoHS compliant, Halogen Free and 100% lead-free. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. The Slo-Blo® fuse design has enhanced inrush withstand characteristics over the NANO2® Fast-Acting Fuse. The unique time delay feature of this fuse design helps solve the problem of nuisance “opening” by accommodating inrush currents that normally cause a fast-acting fuse to open.

Features:

  • Lead-free and Halogen Free
  • Small size
  • Wide range of current ratings available
  • Wide operating temperature range
  • Low temperature rerating

Applications:

Secondary protection for space constrained 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
0449.3751251250.0881.513CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449.375CheckOrder
0449.5001251250.2580.7633CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449.500CheckOrder
0449.7501251250.8470.408CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449.750CheckOrder
0449001.1251251.760.2516CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449001.CheckOrder
0449002.1251256.760.0708CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449002.CheckOrder
0449003.12512519.550.0352CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449003.CheckOrder
0449004.12512540.80.0227CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449004.CheckOrder
0449005.12512559.590.0171CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C0449005.CheckOrder
044901.51251254.70.1186CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C044901.5CheckOrder
044902.512512513.180.04CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C044902.5CheckOrder
044903.512512532.70.0261CeramicLevel 1Slo-Blo/Time Lag (T)/Time Delay-55° to 125°C044903.5CheckOrder
Catalog # Certificates
Sorting icon
0449.375 CSAicon
0449.500 CSAicon
0449.750 CSAicon
0449001. CSAiconMETIicon
0449002. CSAicon
0449003. CSAiconMETIicon
0449004. CSAiconMETIicon
0449005. CSAiconMETIicon
044901.5 CSAiconMETIicon
044902.5 CSAiconMETIicon
044903.5 CSAiconMETIicon
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0449.375MR FUSE 125V SB NANO2 LEAD-FREE .375A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449.375MR No
IPC_0449.375MR
0449.500MR FUSE 125V SB NANO2 LEAD-FREE .500A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449.500MR REACH219_Declaration_0449.500MR No
Does not Contain IPC_0449.500MR
0449.750MR FUSE 125V SB NANO2 LEAD-FREE .750A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449.750MR REACH211_Declaration_0449.750MR No
Does not Contain IPC_0449.750MR
0449001.MR FUSE 125V SB NANO2 LEAD-FREE 1A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449001.MR REACH_SVHC Declaration_0449001.MR No
Does not Contain IPC_0449001.MR
0449002.MR FUSE 125V SB NANO2 LEAD-FREE 2A RoHS No 07/14/2005 PbFree No 03/26/2007 REACH_SVHC Declaration_0449002.MR No
Does not Contain IPC_0449002.MR
0449003.MR FUSE 125V SB NANO2 LEAD-FREE 3A RoHS No 07/14/2005 PbFree No 03/26/2007 REACH197_Declaration_0449003.MR No
Does not Contain
0449004.MR FUSE 125V SB NANO2 LEAD-FREE 4A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449004.MR REACH209_Declaration_0449004.MR No
Does not Contain IPC_0449004.MR
0449005.MR FUSE 125V SB NANO2 LEAD-FREE 5A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_0449005.MR REACH211_Declaration_0449005.MR No
Does not Contain IPC_0449005.MR
044901.5MR FUSE 125V SB NANO2 LEAD-FREE 1.5A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_044901.5MR REACH211_Declaration_044901.5MR No
Does not Contain IPC_044901.5MR
044902.5MR FUSE 125V SB NANO2 LEAD-FREE 2.5A RoHS No 07/14/2005 PbFree No 03/26/2007 REACH205_Declaration_044902.5MR Yes
Does not Contain IPC_044902.5MR
044903.5MR FUSE 125V SB NANO2 LEAD-FREE 3.5A RoHS No 07/14/2005 PbFree No 03/26/2007 CoC_RoHS10_044903.5MR REACH197_Declaration_044903.5MR No
Does not Contain IPC_044903.5MR
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