Littelfuse 0275015.M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0275015.M is a 15 A, 32 V AC/DC board mount axial fuse from the PICO® 275 series. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement. The part is designed for through-hole mounting applications requiring fast-blow response characteristics in compact axial packaging.

Substiute Parts

0275015.M

Littelfuse Inc.In Stock: 9920275015.M Datasheet

Current PartRFQ

0251015.MXL

Littelfuse Inc.In Stock: 32820251015.MXL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0275015.M is determined by strict equivalence across the following critical parameters:

• Current Rating: 15 A (exact match required)
• Voltage Rating: 32 V AC and 32 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The Littelfuse 0251015.MXL from the PICO® II 251 series meets all substitution criteria. This part is an active product with enhanced specifications including CSA and cURus approvals, improved breaking capacity ratings, and RoHS3 compliance. Physical dimensions differ slightly (0.110" Dia vs. 0.093" Dia), but both maintain axial form factor compatibility with standard through-hole board mount applications.

Parameter Comparison

Engineering Selection Recommendations

The 0251015.MXL is the direct substitute for the obsolete 0275015.M. Both parts share identical electrical specifications (15 A, 32 V AC/DC, fast-blow response) and mounting characteristics (through-hole, axial package). The substitute part offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• RoHS3 compliance meets current environmental and regulatory requirements
• CSA and cURus certifications provide third-party validation for safety-critical applications
• Specified breaking capacity ratings (50A AC, 300A DC) provide documented performance data
• Slightly larger diameter (0.110" vs. 0.093") remains compatible with standard through-hole board mount footprints

Physical dimension differences are minor and do not affect functional compatibility in standard PCB applications. Board layout verification is recommended for space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the 0251015.MXL be used as a direct replacement for the 0275015.M?

A: Yes. Both parts are electrically and functionally equivalent with identical current ratings (15 A), voltage ratings (32 V AC/DC), response time (fast-blow), and mounting configuration (through-hole axial). The substitute part is an active product with enhanced certifications and compliance status.

Q: What is the difference in physical size between these parts?

A: The main part measures 0.093" diameter × 0.280" length. The substitute measures 0.110" diameter × 0.280" length. The length is identical; only the diameter increases by 0.017". This difference is compatible with standard through-hole board mount applications.

Q: Why is the 0275015.M obsolete?

A: The 0275015.M is classified as obsolete by the manufacturer. The 0251015.MXL from the newer PICO® II 251 series provides equivalent functionality with improved specifications and active product support.

Q: Are there any compliance differences between these parts?

A: Yes. The 0275015.M is RoHS non-compliant. The 0251015.MXL is RoHS3 compliant and carries CSA and cURus approvals. For applications requiring regulatory compliance, the substitute part is the appropriate choice.

Q: Will the substitute part fit in the same PCB footprint?

A: The axial package and through-hole mounting are identical. The slightly larger diameter (0.110" vs. 0.093") may require verification in space-constrained layouts, but standard board mount applications will accommodate both parts without modification.