0433.750 - 433 Series

Series: 433
Obsolete: 2008 -12-31 Replaced By: 0466.750NR0466.750
Questions? Contact Littelfuse Support
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 433 series fast-acting surface mount fuse series
is a small (1206 size) thin-film device designed for
secondary protection of circuits used in space constrained
applications such as hand-held portable electronic devices.
For RoHS compliant and lead-free design, please refer to
the Littelfuse 466 series thin film fuse. For new designs of
7 amp please refer to Littelfuse 429 series thin film fuse.


  • The SlimLine 1206 fuse is an extremely small, low profile design (1206 chip size) utilizing thin-film technology to achieve precise control of electrical characteristics.
  • The lower height profile produces a flat surface for improved performance in pick-and-place operations and an alternate solution for height critical application.
  • Mounting pad and electrical specification are identical to the popular 429 Series specifications.
Property (Mouseover for details) Value
Body Epoxy Substrate
Nominal Melting I2T (A2sec) 0.017
Min Operating Temp °C -55
Max Operating Temp (°C) 90
Opening Very Fast-Acting (FF)

csa CSA_1422-01_029862

pdf icon UR_JDYX2_E10480_9_30_14

433 Series Time Curve Data

PCN EFU100 3_PCN Obs_Non RoHS_Thin Film fuse_032708icon Non RoHS Thin Film Fuse Obsoletion

PCN# EFU100-3 Littelfuse Inc. would like to inform customers that it will cease production of its Non-RoHS compliant and lead based Surface Mount Thin Film Fuses products on December 31 2008. The product series impacted are the following. Thin Film Fuse Series - 0430, 0433, 0434 and the 0429xxx.WRM series. The final date for which orders will be taken is September 30, 2008. In all cases Littelfuse has RoHS and Lead-Free alternative series now available . The most up to date information on these series can be found on the Littelfuse website, http://www.littelfuse.com/. Littelfuse Inc is implementing this change so that it can continue to pursue a policy of manufacturing and selling "Green" products.

433icon Fuse 433 Datasheet

The 433 series fast-acting surface mount fuse series is a small (1206 size) thin-film device designed for secondary protection of circuits...

pdf icon Fuse Accessories Selection Guide

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

pdf icon Fuse Selection Guide

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

pdf icon Product Selection Guide

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

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...

Littelfuse_Phils_ISO9001_102407icon 2022-06-17_ISO 9001 2015_LF Phils

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

To request product environmental information, please complete the Product Environmental Information Request Form.