435 Series - SlimLine Lead-Free 0402 Very Fast-Acting Thin-Film Fuse

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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 at 32VDC
  • Small size with current ratings of 0.25 to 5.0 amperes
  • RoHS compliant, Lead-Free and Halogen-Free
  • Maximum protection of sensitive circuits as fuses are designed to open consistently in <5sec at 200% overload.
  • Enhanced Breaking Capacity, High l²t

Secondary protection for space constrained applications such as:

  • Cell phones
  • Battery packs
  • Digital cameras
  • DVD players
  • Hard disk drives

Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
BodyMin Operating Temp (°C)Max Operating Temp (°C)OpeningStockSamplesCompare
0435.25032320.00250.4Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435.37532320.00350.027Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435.50032320.00530.16Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435.75032320.0120.105Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435001.32320.020.073Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435002.32320.10.03Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435003.32320.20320.017Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435004.32320.30840.0105Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
0435005.32320.5310.0085Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
043501.532320.0560.047Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
043502.532320.1560.02Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
043503.532320.30170.015Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
04351.2532320.0350.06Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
04351.7532320.0750.039Epoxy/Glass Substrate-5590Very Fast-Acting (FF)CheckOrder
To request product environmental information, please complete the Product Environmental Information Request Form.

pdf icon General Port Protection

pdf icon Point of Sale

pdf icon Wireless Charger Solutions

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

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