Littelfuse 0263005.MAT1L Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0263005.MAT1L is a 5A 250VAC board mount fuse in axial package configuration, designed for through-hole PCB mounting applications. This fast-blow fuse is part of the PICO® II 263 series and maintains active product status with full regulatory compliance. Substitute parts are identified when packaging format differs while all critical electrical and mechanical parameters remain identical, enabling flexible procurement and supply chain optimization.

Substiute Parts

0263005.MAT1L

Littelfuse Inc.In Stock: 10510263005.MAT1L Datasheet

Current PartRFQ

0263005.HAT1L

Littelfuse Inc.In Stock: 9920263005.HAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 0263005.HAT1L is classified as a parametric equivalent based on identical electrical and mechanical specifications. The substitution is valid because all critical parameters that determine fuse functionality and PCB compatibility are preserved:

Key Parameters Determining Substitution Validity:

• Current Rating: 5 A (identical)
• Voltage Rating: 250 V AC (identical)
• Response Time: Fast Blow (identical)
• Breaking Capacity: 50 A (identical)
• Melting I²t: 5.55 (identical)
• Physical Dimensions: 0.155" Dia x 0.280" L (identical)
• DC Cold Resistance: 0.0145 Ohms (identical)
• Operating Temperature: -55°C to 125°C (identical)
• Mounting Type: Through Hole Axial (identical)

The only difference between the main part and substitute is the packaging format: Tape & Box (TB) versus Cut Tape (CT). This packaging distinction does not affect electrical performance, thermal characteristics, or mechanical fit on the PCB.

Parameter Comparison

Engineering Selection Recommendations

Both the 0263005.MAT1L and 0263005.HAT1L are suitable for applications requiring a 5A 250VAC fast-blow board mount fuse. Selection between these parts should be based on procurement and assembly requirements:

0263005.MAT1L (Tape & Box): Recommended for high-volume manufacturing environments where tape-and-reel packaging with box containment supports automated pick-and-place assembly processes.

0263005.HAT1L (Cut Tape): Recommended for lower-volume production, prototype builds, or manual assembly operations where cut tape packaging provides flexibility in component handling and inventory management.

Both parts carry identical regulatory certifications (CSA, PSE, UR), maintain ROHS3 compliance, and are unaffected by REACH restrictions. Both are classified as active products with confirmed stock availability. The electrical performance, thermal characteristics, and mechanical fit are functionally equivalent for all circuit protection applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can 0263005.HAT1L be used as a direct replacement for 0263005.MAT1L on the same PCB?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Box versus Cut Tape). PCB footprint, soldering requirements, and electrical performance are unchanged.

Q: What does "Fast Blow" response time mean for this fuse?

A: Fast Blow indicates the fuse operates with minimal delay before opening the circuit when current exceeds the 5A rating. This characteristic is identical in both parts.

Q: Are there any temperature or environmental differences between these parts?

A: No. Both parts operate across the identical temperature range of -55°C to 125°C and share the same environmental compliance status (ROHS3 Compliant, REACH Unaffected).

Q: Why would I choose Cut Tape packaging over Tape & Box?

A: Cut Tape (CT) packaging is typically selected for lower-volume production runs, prototype development, or manual assembly workflows where smaller quantities and flexible handling are advantageous. Tape & Box (TB) is optimized for high-volume automated assembly.

Q: Do both parts have the same breaking capacity?

A: Yes. Both the 0263005.MAT1L and 0263005.HAT1L have a breaking capacity of 50A at rated voltage, ensuring identical protection performance in fault conditions.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.155" diameter by 0.280" length (3.94mm x 7.11mm), ensuring identical PCB footprint and mounting hole compatibility.