Littelfuse 0263005.M Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0263005.M is a 5A 250VAC board mount fuse in axial package configuration, designed for through-hole PCB mounting applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production support and design updates. The substitute part maintains identical electrical and mechanical specifications while offering improved compliance status and current inventory availability.

Substiute Parts

0263005.M

Littelfuse Inc.In Stock: 11260263005.M Datasheet

Current PartRFQ

0263005.MXL

Littelfuse Inc.In Stock: 27140263005.MXL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0263005.MXL qualifies as a direct substitute based on the following criteria:

Electrical Parameters Match:

• Current Rating: 5 A (identical)
• Voltage Rating: 250 VAC (identical)
• Response Time: Fast Blow (identical)
• Breaking Capacity: 50 A @ Rated Voltage (identical)
• Melting I²t: 5.55 (identical)
• DC Cold Resistance: 0.0145 Ohms (identical)

Mechanical Parameters Match:

• Mounting Type: Through Hole (identical)
• Package Type: Axial (identical)
• Physical Dimensions: 0.155" Dia × 0.280" L (identical)
• Operating Temperature Range: -55°C to 125°C (identical)

Certification Match:

• Approval Agencies: CSA, PSE, UR (identical)

The substitution is valid because all critical electrical, mechanical, and certification parameters are identical between the main part and substitute.

Parameter Comparison

Engineering Selection Recommendations

The 0263005.MXL is the appropriate selection for new designs and production continuity:

Product Status: The 0263005.M is obsolete, while the 0263005.MXL maintains active product status with established supply chain availability (2677 pcs in stock versus 1106 pcs for the obsolete variant).

Compliance: The 0263005.MXL achieves ROHS3 compliance, whereas the 0263005.M is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the 0263005.MXL is the mandated choice.

Electrical and Mechanical Equivalence: Both parts are electrically and mechanically identical, ensuring direct PCB compatibility without design modification.

Certifications: Both parts carry identical approval certifications (CSA, PSE, UR), maintaining regulatory compliance across all supported markets.

Frequently Asked Questions (FAQ)

Q: Can the 0263005.MXL be used as a direct replacement for the 0263005.M on existing PCBs?

A: Yes. The 0263005.MXL is mechanically and electrically identical to the 0263005.M. The axial package dimensions, through-hole mounting footprint, and all electrical parameters are unchanged, enabling direct substitution without PCB redesign.

Q: What is the difference between the 0263005.M and 0263005.MXL?

A: The primary differences are product status and compliance. The 0263005.M is obsolete with RoHS non-compliant status. The 0263005.MXL is an active product with ROHS3 compliance. Packaging differs (standard versus bulk), but electrical and mechanical specifications are identical.

Q: Why is RoHS compliance important for this fuse?

A: RoHS (Restriction of Hazardous Substances) compliance is a regulatory requirement in many markets, particularly the European Union and regions with equivalent standards. ROHS3-compliant components ensure products meet environmental and safety directives. For applications subject to these regulations, the 0263005.MXL is required.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts share identical operating temperature ranges (-55°C to 125°C), melting I²t values (5.55), DC cold resistance (0.0145 Ohms), and breaking capacity (50 A). Thermal and electrical performance are equivalent.

Q: What packaging options are available?

A: The 0263005.M is supplied in standard packaging, while the 0263005.MXL is available in bulk packaging. Bulk packaging is typically used for high-volume production orders. Contact the supplier for specific packaging requirements.

Q: Are both parts certified by the same agencies?

A: Yes. Both the 0263005.M and 0263005.MXL carry identical certifications from CSA, PSE, and UR, ensuring compliance across North American, Japanese, and international markets.