Littelfuse 0275010.M Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0275010.M is a 10A 125VAC/VDC board mount fuse with fast blow response time, designed for through-hole axial mounting applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The PICO® 275 series fuse requires substitution with current production alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

0275010.M

Littelfuse Inc.In Stock: 10190275010.M Datasheet

Current PartRFQ

0251010.MXL

Littelfuse Inc.In Stock: 36940251010.MXL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0275010.M is based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Current Rating: 10 A (exact match required)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole Axial (exact match required)
• Fuse Type: Board Mount, Cartridge Style Excluded (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)

The Littelfuse 0251010.MXL meets all primary substitution criteria. While dimensional tolerances differ slightly (0.110" Dia vs. 0.093" Dia), both components maintain through-hole axial mounting compatibility on standard PCB layouts. The 0251010.MXL represents the manufacturer-recommended successor within the PICO® II 251 series.

Parameter Comparison

Engineering Selection Recommendations

The 0251010.MXL is the direct active equivalent for the obsolete 0275010.M. Selection is based on:

Electrical Compatibility: Both components share identical current rating (10 A), voltage ratings (125 V AC/DC), and response time (Fast Blow), ensuring functional equivalence in circuit protection applications.

Mechanical Compatibility: Both components use through-hole axial mounting with compatible PCB footprints. Dimensional variation (0.110" Dia vs. 0.093" Dia) does not affect mounting compatibility on standard board layouts.

Regulatory Compliance: The 0251010.MXL carries expanded approval certifications (CSA, cURus, TUV) compared to the original UL-only rating, and achieves ROHS3 compliance, meeting current environmental and safety standards.

Product Status: The 0251010.MXL is in active production with confirmed inventory availability (3652 pcs), ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the 0251010.MXL be used as a direct replacement for the 0275010.M?

A: Yes. Both components meet identical electrical specifications (10 A, 125 V AC/DC, Fast Blow response) and use compatible through-hole axial mounting. The 0251010.MXL is the manufacturer-recommended active equivalent.

Q: Are there dimensional differences between these fuses?

A: Yes. The 0275010.M has a 0.093" diameter, while the 0251010.MXL has a 0.110" diameter. Both maintain through-hole axial mounting compatibility on standard PCB layouts. Verify board hole sizing during design review if upgrading existing assemblies.

Q: What is the difference in approval certifications?

A: The 0275010.M carries UL approval only. The 0251010.MXL carries CSA, cURus, and TUV approvals, providing broader regulatory acceptance across North American and international markets.

Q: Does the 0251010.MXL meet RoHS requirements?

A: Yes. The 0251010.MXL is ROHS3 compliant, whereas the 0275010.M is RoHS non-compliant. This makes the 0251010.MXL suitable for applications requiring environmental compliance.

Q: What is the inventory status of the substitute part?

A: The 0251010.MXL is in active production with 3652 pcs available in stock, ensuring reliable procurement for new designs and production runs.

Q: Are there any performance differences in breaking capacity?

A: The 0251010.MXL specifies breaking capacity (50A AC, 300A DC) and melting I²t (25.5), providing documented fault current handling characteristics. The original 0275010.M does not specify these parameters in available documentation.