0435.750 - 435 Series

Series: 435
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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 435 Series are fast-acting surface mount thin-film
fuses.Their ultra-small size (0402 size) makes them ideal for
secondary protection of circuits used in space constrained
applications such as hand-held portable electronic devices.
This series is 100% lead-free and meet the requirements of
the RoHS directive. New Halogen-Free 435 Series fuses are
available–to order use the “HF” suffix. See Part Numbering
section for additional information.


  • 35A interrupt rating at32 VDC
  • Small size with currentratings of 0.25 to 5.0amperes
  • RoHS compliant, leadfree and halogen-free
  • Maximum protectionof sensitive circuitsas fuses are designedto open consistentlyin <5sec at 200%overload.
  • Enhanced BreakingCapacity, High l2t
Property (Mouseover for details) Value
Ampere Rating (A) 0.75
Body Epoxy/Glass Substrate
Nominal Melting I2T (A2sec) 0.012
Interrupting Rating 35A@32VDC
Marking Code Geometric (see datasheet)
Min Operating Temp °C -55
Max Operating Temp (°C) 90
Nominal Power Dissipation (W) 0.07638
Nominal Voltage Drop (mV) 101.84
Nominal Cold Resistance (Ohms) 0.105
Opening Very Fast-Acting (FF)
Package Size 0402 (1005)

Littelfuse_Phils_ISO9001_102407icon 2022-06-17_ISO 9001 2015_LF Phils

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

csa CSA_1422-01_029862

UR UR_JDYX2_E10480_9_30_14

pdf icon General Port Protection

pdf icon Point of Sale

435 Series Time Curve Data

Littelfuse_435_NoA_UL 143931icon Notice of Authorization to Apply UL Mark for 2 5 5A Ratings

EC611 Circuit Protection for Lithium Ion and Lithium Polymer Rechargeable Battery Applications

This application note summarizes how the increased use of Lithium-Ion and Lithium Polymer battery packs in applications where user safety is critical, the implementation of secondary protection circuits will ensure an unsurpassed level of safety with minimal cost impact.

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