437 Series - 1206 Size Lead-Free, Halogen Free, High Temperature Very Fast-Acting Ceramic 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. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

This 100% Lead-free, RoHS compliant and Halogen-free fuse series has been designed specifically to provide over current protection to circuits that see high working ambient temperatures (up to 150ºC).
The general design ensures excellent temperature stability and performance reliability.
In addition to this, the high I²t values typical of the Littelfuse Ceramic Fuse family ensure high inrush current withstand capability.

  • Operating Temperature from -55ºC to +150ºC
  • 100% Lead-free, HalogenFree and RoHS compliant
  • Suitable for both leaded and lead-free reflow / wave soldering


  • LCD Displays
  • Servers
  • Printers
  • Scanners
  • Data Modems

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
0437.2500.251251250.0032.2950A@125VDCCeramic Body-55150DIPC/JEDEC J-STD-020C LEVEL 10.1950.78Fast-Acting (F)1206 (3216)CheckOrder
0437.3750.3751251250.011.3350A@125VDCCeramic Body-55150EIPC/JEDEC J-STD-020C LEVEL 10.2250.6Fast-Acting (F)1206 (3216)CheckOrder
0437.5000.563630.0180.90850A@63VDCCeramic Body-55150FIPC/JEDEC J-STD-020C LEVEL 10.260.52Fast-Acting (F)1206 (3216)CheckOrder
0437.7500.7563630.0640.66550A@63VDCCeramic Body-55150GIPC/JEDEC J-STD-020C LEVEL 10.3380.45Fast-Acting (F)1206 (3216)CheckOrder
0437001163630.10.3650A@63VDCCeramic Body-55150HIPC/JEDEC J-STD-020C LEVEL 10.410.41Fast-Acting (F)1206 (3216)CheckOrder
0437002263630.28420.06250A@63VDCCeramic Body-55150NIPC/JEDEC J-STD-020C LEVEL 10.340.17Fast-Acting (F)1206 (3216)CheckOrder
0437003332320.40.03350A@32VDCCeramic Body-55150PIPC/JEDEC J-STD-020C LEVEL 10.450.15Fast-Acting (F)1206 (3216)CheckOrder
0437004432321.0240.02250A@32VDCCeramic Body-55150SIPC/JEDEC J-STD-020C LEVEL 10.640.16Fast-Acting (F)1206 (3216)CheckOrder
0437005532321.9360.01650A@32VDCCeramic Body-55150TIPC/JEDEC J-STD-020C LEVEL 10.450.09Fast-Acting (F)1206 (3216)CheckOrder
0437007732324.90.0150A@32VDCCeramic Body-55150WIPC/JEDEC J-STD-020C LEVEL 10.770.11Fast-Acting (F)1206 (3216)CheckOrder
0437008832326.40.008750A@32VDCCeramic Body-55150XIPC/JEDEC J-STD-020C LEVEL 10.5360.067Fast-Acting (F)1206 (3216)CheckOrder
043701.51.563630.1580.20950A@63VDCCeramic Body-55150KIPC/JEDEC J-STD-020C LEVEL 10.5850.39Fast-Acting (F)1206 (3216)CheckOrder
043702.52.532320.38860.04350A@32VDCCeramic Body-55150OIPC/JEDEC J-STD-020C LEVEL 10.350.14Fast-Acting (F)1206 (3216)CheckOrder
043703.53.532320.5760.02750A@32VDCCeramic Body-55150RIPC/JEDEC J-STD-020C LEVEL 10.560.16Fast-Acting (F)1206 (3216)CheckOrder
04371.251.2563630.11170.31850A@63VDCCeramic Body-55150JIPC/JEDEC J-STD-020C LEVEL 10.50.4Fast-Acting (F)1206 (3216)CheckOrder
04371.751.7563630.24690.07150A@63VDCCeramic Body-55150LIPC/JEDEC J-STD-020C LEVEL 10.4730.27Fast-Acting (F)1206 (3216)CheckOrder

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