Littelfuse 0263.250MAT1L Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0263.250MAT1L is a 250 mA, 250 V AC/DC board mount fuse in the PICO® II 263 series, designed for through-hole axial mounting applications. This fast-blow fuse provides circuit protection in compact form factor with a breaking capacity of 50A at rated voltage. The part is actively manufactured and widely stocked, with 984 units available in original inventory. Substitute parts may be required due to packaging format availability, supply chain constraints, or specific procurement requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

0263.250MAT1L

LittelfuseIn Stock: 10580263.250MAT1L Datasheet

Current PartRFQ

0263.250HAT1L

Littelfuse Inc.In Stock: 8360263.250HAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 0263.250HAT1L qualifies as a parametric equivalent to the 0263.250MAT1L based on strict electrical and mechanical parameter matching. Both parts share identical specifications across all critical substitution criteria:

Key Parameters for Substitution Compatibility:

• Current Rating: 250 mA (identical)
• Voltage Rating (AC): 250 V (identical)
• Response Time: Fast Blow (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: Axial (identical)
• Breaking Capacity @ Rated Voltage: 50A (identical)
• Melting I²t: 0.0165 (identical)
• Operating Temperature Range: -55°C to 125°C (identical)
• DC Cold Resistance: 0.715 Ohms (identical)
• Physical Dimensions: 0.155" Dia x 0.280" L (identical)
• Series: PICO® II 263 (identical)
• Compliance: ROHS3 Compliant, CSA/UR Approved (identical)

The only difference between these parts is the packaging format: the main part (0263.250MAT1L) is supplied in Tape & Box (TB) format, while the substitute (0263.250HAT1L) is supplied in Cut Tape (CT) format. This packaging distinction does not affect electrical performance, mechanical compatibility, or circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

Both the 0263.250MAT1L and 0263.250HAT1L are active, production-status components manufactured by Littelfuse with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Packaging Requirements: The 0263.250MAT1L is supplied in Tape & Box (TB) format, suitable for applications requiring bulk quantities with protective packaging. The 0263.250HAT1L is supplied in Cut Tape (CT) format, appropriate for automated assembly processes or applications with specific tape reel requirements.

Compliance and Certification: Both parts maintain identical compliance certifications including ROHS3 compliance and CSA/UR approval agencies, ensuring regulatory requirements are met regardless of which part is selected.

Inventory and Lead Time: The 0263.250MAT1L has 984 units in stock, while the 0263.250HAT1L has 783 units available. Selection may depend on immediate availability requirements and procurement timelines.

Circuit Performance: No performance differences exist between these parts. Both deliver identical electrical characteristics, thermal performance, and protection characteristics in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 0263.250HAT1L be used as a direct replacement for the 0263.250MAT1L in production assembly?

A: Yes. The 0263.250HAT1L is a direct parametric equivalent with identical electrical and mechanical specifications. The only difference is packaging format (Cut Tape vs. Tape & Box). If your assembly process accommodates Cut Tape format, this substitute provides identical circuit protection performance.

Q: What is the difference between Tape & Box (TB) and Cut Tape (CT) packaging?

A: Tape & Box (TB) packaging supplies components on tape with protective box packaging, typically used for manual assembly or bulk storage. Cut Tape (CT) packaging supplies components on tape without the protective box, commonly used for automated pick-and-place assembly systems. Both formats contain the same component with identical specifications.

Q: Are there any thermal or electrical performance differences between these two part numbers?

A: No. Both parts have identical current ratings (250 mA), voltage ratings (250 V AC), response time (Fast Blow), breaking capacity (50A), melting I²t (0.0165), DC cold resistance (0.715 Ohms), and operating temperature range (-55°C to 125°C). Circuit performance is identical.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the 0263.250MAT1L and 0263.250HAT1L are ROHS3 compliant and approved by CSA and UR agencies. Regulatory compliance is identical between these parts.

Q: Which part should I select if I need immediate availability?

A: The 0263.250MAT1L has higher inventory availability (984 units vs. 783 units). However, both parts are actively manufactured and in stock. Selection should be based on your packaging format requirements and assembly process compatibility.

Q: Can these fuses be used interchangeably on the same PCB?

A: Yes. Both parts have identical physical dimensions (0.155" Dia x 0.280" L), axial package configuration, and through-hole mounting specifications. They are mechanically and electrically interchangeable on PCBs designed for this fuse type.