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


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 #Amps (A)VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
Interrupting RatingBodyMin Operating Temp °CMax Operating Temp (°C)Marking CodeStockSamplesCompare
0435.2500.2532320.00250.435A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435.3750.37532320.00350.02735A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435.5000.532320.00530.1635A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435.7500.7532320.0120.10535A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435001.132320.020.07335A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435002.232320.10.0335A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435003.332320.20320.01735A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435004.432320.30840.010535A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
0435005.532320.5310.008535A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
043501.51.532320.0560.04735A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
043502.52.532320.1560.0235A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
043503.53.532320.30170.01535A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
04351.251.2532320.0350.0635A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder
04351.751.7532320.0750.03935A@32VDCEpoxy/Glass Substrate-5590Geometric (see datasheet)CheckOrder

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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