Littelfuse 0255003.M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0255003.M is a 3A 125VAC/VDC board mount axial fuse with fast blow response characteristics. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The PICO® 255 series fuse is designed for through-hole mounting applications requiring reliable overcurrent protection in low-voltage circuits.

Substiute Parts

0255003.M

Littelfuse Inc.In Stock: 9340255003.M Datasheet

Current PartRFQ

0251003.MXL

Littelfuse Inc.In Stock: 94310251003.MXL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0251003.MXL qualifies as a direct substitute for the 0255003.M based on the following critical electrical and mechanical parameters:

Matching Parameters:

• Current Rating: 3 A (identical)
• Voltage Rating AC: 125 V (identical)
• Voltage Rating DC: 125 V (identical)
• Response Time: Fast Blow (identical)
• Mounting Type: Through Hole (identical)
• Fuse Type: Board Mount (Cartridge Style Excluded) (identical)
• Package / Case: Axial (identical)
• Breaking Capacity @ Rated Voltage: 50A AC, 300A DC (identical)

The 0251003.MXL represents the active production equivalent within the Littelfuse PICO® fuse family, offering functional and electrical compatibility with the obsolete 0255003.M.

Parameter Comparison

Engineering Selection Recommendations

The 0251003.MXL is the manufacturer-recommended substitute for the obsolete 0255003.M. Both components share identical electrical ratings and mechanical specifications, ensuring direct functional compatibility in existing circuit designs.

The 0251003.MXL offers enhanced compliance status, meeting ROHS3 requirements compared to the non-compliant 0255003.M. The substitute part carries broader regulatory approvals (CCC, CSA, cURus, PSE, TUV) versus the original part (CSA, UL), providing expanded market acceptance and regulatory coverage.

The 0251003.MXL is actively manufactured and maintains higher inventory availability (9353 pcs vs. 878 pcs), supporting both immediate procurement needs and long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 0251003.MXL be used as a direct replacement for the 0255003.M?

A: Yes. Both components share identical current ratings (3A), voltage ratings (125VAC/VDC), response time (Fast Blow), mounting type (Through Hole), and breaking capacity specifications. Electrical and mechanical compatibility is confirmed.

Q: What are the physical dimension differences between these parts?

A: The 0255003.M has a diameter of 0.095" (2.41mm) and length of 0.280" (7.11mm). The 0251003.MXL has a diameter of 0.110" (2.80mm) and length of 0.280" (7.11mm). The length is identical; the diameter difference is 0.015" (0.39mm). PCB footprint compatibility should be verified for applications with tight spatial constraints.

Q: What is the difference in RoHS compliance between these parts?

A: The 0255003.M is RoHS non-compliant. The 0251003.MXL is ROHS3 compliant, meeting current environmental and material restriction standards for electronic components.

Q: Are there differences in regulatory approvals?

A: The 0255003.M carries CSA and UL approvals. The 0251003.MXL carries CCC, CSA, cURus, PSE, and TUV approvals, providing broader regulatory coverage for international applications.

Q: What is the DC Cold Resistance specification for the substitute part?

A: The 0251003.MXL has a DC Cold Resistance of 0.0295 Ohms. This specification was not provided for the 0255003.M.

Q: Is the 0251003.MXL available in different packaging options?

A: The 0251003.MXL is supplied in Bulk packaging. The original 0255003.M packaging specification was not provided in the available data.