443LC Series - NANO 280VAC-rated Surface Mount Fuses

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The 443LC Series NANO²® fuse is a 4012 footprint, Slo Blo surface mount fuse which provides overcurrent protection for applications with working voltage up to 277VAC.

Its high I2t provides superior surge withstand capability for its small footprint. This can therefore be used on applications where board space is a limitation, without worrying of any nuisance failures due to surge/pulse current and voltages in the application, or where larger sized solutions are previously being used.


  • 280VAC-rated fuse in a relatively small footprint of 10mm x 3mm (sq)
  • Slo Blo fuse type with relatively high I2t values
  • RoHS compliant, Halogen Free
  • Surface mount type fuse


  • Option for applications with working voltage up to 277VAC
  • With superior surge withstand capability, considering its size, and is suited for applications where surge current/voltages are inherent and board space is a constraint
  • Compliant to global EHS standards
  • Fully compatible with lead free solder alloys and higher temperature profiles associated with high volume, lead-free assembly SMD processes


  • Lighting Ballast
  • LED Driver Boards
  • LED Dimmer Controllers
  • 3-Phase power supplies
  • Utility connected  appliances and equipment rated at 277V AC

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMin Operating Temp °CMax Operating Temp (°C)Marking CodeMSLStockSamplesCompare
0443.5000.52801.610.650A@280VACCeramic-55125LF 500mA T AC280V1CheckOrder
0443.7500.752803.0250.27550A@280VACCeramic-55125LF 750mA T AC280V1CheckOrder
0443001128010.170.1850A@280VACCeramic-55125LF 1A T AC280V1CheckOrder
0443002228018.060.05250A@280VACCeramic-55125LF 2A T AC280V1CheckOrder
0443003328051.440.02850A@280VACCeramic-55125LF 3A T AC280V1CheckOrder
04430044280122.50.01650A@280VACCeramic-55125LF 4A T AC280V1CheckOrder
04430055280180.60.011550A@280VACCeramic-55125LF 5A T AC280V1CheckOrder
044301.51.528014.720.150A@280VACCeramic-55125LF 1.5A T AC280V1CheckOrder
044302.52.528018.130.03550A@280VACCeramic-55125LF 2.5A T AC280V1CheckOrder
044303.53.528053.140.01950A@280VACCeramic-55125LF 3.5A T AC280V1CheckOrder

pdf icon Fuse 443 Datasheet

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