383 Series - 300VAC Subminiature Time-Lag TR5® Fuse

Roll Over to Zoom
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 383 series in its compact TR5® package provide an ideal alternative over glass cartridge fuses in electronic ballast application, especially where PCB board space is limited.

The 383 series radial leaded fuses are rated at 300VAC as compared to existing competition in the market which are rated at 250VAC.

In addition, it can either be directly soldered or used in conjunction with plug-in holder. And its Tape and Ammo-packaging are ideal for high volume production.


  • Offer adequate circuit protection at high operating voltage
  • Help to optimize the use of limited PCB board space
  • UL and CSA agency approval


  • Electronic Ballast

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)Resistance
Interrupting RatingNominal Melting I2T (A2sec)Min Operating Temp (°C)Max Operating Temp (°C)Marking CodeNom
383110000013000.062550A@300VAC3-651250400100Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
38311250001.253000.0550A@300VAC6.9-65125046595Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
38311600001.63000.037750A@300VAC9-65125049090Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
383120000023000.02850A@300VAC12-65125067085Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
38312500002.53000.021550A@300VAC22-65125075080Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
38313150003.153000.017650A@300VAC32-65125090075Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
383140000043000.013850A@300VAC58-651250120070Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
383150000053000.010850A@300VAC90-651250125065Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
38316300006.33000.007650A@300VAC171-651250140065Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
383180000083000.0058950A@300VAC275-651250160063Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder
3832100000103000.004250A@300VAC440-651250160057Slo-Blo/Time Lag (T)/Time DelayTR5 (8.5x8mm)CheckOrder

pdf icon Smart LED Lighting

pdf icon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive, industrial, handheld, computer and telecom markets...

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon Fuse Selection Guide

A quick reference guide to selecting fuses for electronic applications...

pdf icon Littelfuse Fuse Accessories Selection Guide

A quick reference guide to selecting holders, blocks and clips for fuse applications...

pdf icon Fuse 383 Datasheet

TR5®, Time-Lag type, 300V rated and designed in accordance to IEC60127-3...

Littelfuse_Phils_ISO9001_102407icon 2022-06-17_ISO 9001 2015_LF Phils

PhilsISO14001Certificateicon 2022-04-19_ISO 14001-2015_LF Phils

pdf icon Electronic Fuse Products Catalog

Littelfuse Electronic Fuse Products Catalog -- Miniature Fuse Products for Overcurrent Protection of Small Electrical and Electrical Applications...