FEMTOSMDC005F-02 Equivalent & Substitute Parts

Part Overview

The FEMTOSMDC005F-02 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc. as part of the PolySwitch® series. This surface mount component is designed for overcurrent protection in 15V circuits with a 50 mA hold current rating. The part is currently Active in product status and maintains full inventory availability. Substitute parts are identified to provide alternative sourcing options while maintaining identical electrical and mechanical specifications for direct circuit board replacement.

Substiute Parts

FEMTOSMDC005F-02

Littelfuse Inc.In Stock: 1023FEMTOSMDC005F-02 Datasheet

Current PartRFQ

FEMTOSMDC005F-2

Littelfuse Inc.In Stock: 4268FEMTOSMDC005F-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FEMTOSMDC005F-02 is determined by strict equivalence across the following critical parameters:

• Maximum voltage rating: 15V
• Hold current (Ih): 50 mA
• Trip current (It): 150 mA
• Package type: 0603 (1608 Metric), Concave
• Mounting configuration: Surface Mount
• Regulatory compliance: CSA, UL approval
• Environmental compliance: ROHS3 Compliant

The identified substitute part FEMTOSMDC005F-2 meets all these criteria and is classified as a direct manufacturer equivalent from Littelfuse Inc., differing only in packaging format and minor physical dimensions within acceptable tolerance ranges for PCB assembly.

Parameter Comparison

Engineering Selection Recommendations

Both FEMTOSMDC005F-02 and FEMTOSMDC005F-2 are Active products from Littelfuse Inc. with identical electrical performance specifications and regulatory certifications. Selection between these parts is based on packaging and inventory availability rather than functional differences.

FEMTOSMDC005F-02 is supplied in standard packaging format with 996 units currently in stock. FEMTOSMDC005F-2 is supplied in Cut Tape (CT) and Digi-Reel® packaging with 4200 units in stock, offering higher volume availability for production environments.

Both parts carry CSA and UL approval certifications and maintain ROHS3 compliance. The physical dimensions and thermal characteristics are equivalent for PCB assembly and thermal management purposes.

Frequently Asked Questions (FAQ)

Q: Can FEMTOSMDC005F-2 be used as a direct replacement for FEMTOSMDC005F-02 on the same circuit board?

A: Yes. Both parts are electrically and mechanically identical with matching voltage ratings (15V), hold current (50 mA), trip current (150 mA), and package configuration (0603 Concave). Direct substitution is supported without circuit modification.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. FEMTOSMDC005F-02 uses standard packaging, while FEMTOSMDC005F-2 uses Cut Tape (CT) and Digi-Reel® formats. Electrical specifications and performance characteristics are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both FEMTOSMDC005F-02 and FEMTOSMDC005F-2 are ROHS3 Compliant and carry CSA and UL approval certifications.

Q: What is the operating temperature range for these parts?

A: FEMTOSMDC005F-2 specifies an operating temperature range of -40°C to 85°C. FEMTOSMDC005F-02 does not specify an operating temperature range in the provided data.

Q: Can these parts be used interchangeably in high-volume production?

A: Yes. Both parts are from the same manufacturer and series with identical electrical ratings. Selection should be based on packaging format preference and inventory availability for your production requirements.