Littelfuse 0275002.M Equivalent & Substitute Parts

Part Overview

The Littelfuse 0275002.M is a 2A 125VAC/VDC board mount axial fuse designed for through-hole applications. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations. The PICO® 275 series fuse provides fast-blow protection in compact axial packaging for low-voltage DC and AC circuits.

Substiute Parts

0275002.M

Littelfuse Inc.In Stock: 9690275002.M Datasheet

Current PartRFQ

0251002.MXL

Littelfuse Inc.In Stock: 62880251002.MXL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0275002.M is determined by strict equivalence across the following critical parameters:

• Current Rating: 2 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 (exact match required)
• Fuse Type: Board Mount, Axial configuration (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

The substitute part 0251002.MXL meets all mandatory electrical and mechanical parameters. Physical dimensions differ slightly (0.110" Dia vs. 0.093" Dia), but both conform to axial through-hole board mount specifications and are mechanically compatible with standard fuse footprints.

Parameter Comparison

Engineering Selection Recommendations

The 0251002.MXL is the designated manufacturer substitute for the obsolete 0275002.M. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical specifications across current, voltage, and response characteristics.

The 0251002.MXL offers the following advantages for new designs and system updates:

• Active product status with established supply chain availability (6232 pcs in stock vs. 922 pcs for the obsolete part)
• ROHS3 compliance, meeting current environmental regulations
• Enhanced approval certifications (CCC, CSA, cURus, PSE, TUV) compared to the main part (UL only)
• Specified breaking capacity (50A AC, 300A DC) and melting I²t rating (0.405)
• Documented DC cold resistance (0.0473 Ohms)

Physical dimensions differ marginally (0.110" Dia x 0.280" L vs. 0.093" Dia x 0.280" L), with the substitute featuring a slightly larger diameter. Both maintain axial through-hole compatibility with standard board mount fuse footprints.

Frequently Asked Questions (FAQ)

Q: Can the 0251002.MXL be used as a direct replacement for the 0275002.M?

A: Yes. Both parts share identical electrical ratings (2A, 125VAC/VDC, Fast Blow) and mounting specifications (Through Hole, Axial, Board Mount). The 0251002.MXL is the manufacturer-recommended substitute.

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

A: The 0275002.M measures 0.093" Dia x 0.280" L, while the 0251002.MXL measures 0.110" Dia x 0.280" L. The length is identical; the diameter differs by 0.017". Both fit standard axial fuse footprints on PCBs.

Q: Why is the 0275002.M obsolete?

A: The 0275002.M belongs to the PICO® 275 series, which has been superseded by the PICO® II 251 series (0251002.MXL). Littelfuse has transitioned product lines to newer, more compliant alternatives.

Q: Does the 0251002.MXL meet current regulatory requirements?

A: Yes. The 0251002.MXL is ROHS3 compliant and holds multiple international certifications (CCC, CSA, cURus, PSE, TUV), making it suitable for applications requiring current environmental and safety standards.

Q: Are there any electrical performance differences between the two parts?

A: No. Both parts maintain identical current ratings, voltage ratings, and response times. The 0251002.MXL provides additional documented specifications (breaking capacity, melting I²t, DC cold resistance) that were not specified for the obsolete part.

Q: What is the inventory status for each part?

A: The 0275002.M has 922 pcs available as new original stock. The 0251002.MXL has 6232 pcs available, indicating superior supply chain availability for the active substitute.