Littelfuse 41917000000 Equivalent & Substitute Parts

Part Overview

The Littelfuse 41917000000 is a 7A 125VAC/VDC board mount surface mount fuse in 2410 (6125 Metric) package configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates across a temperature range of -65°C to 125°C with fast blow response characteristics and is approved by cULus standards.

Substiute Parts

41917000000

Littelfuse Inc.In Stock: 88141917000000 Datasheet

Current PartRFQ

0451007.MRL

Littelfuse Inc.In Stock: 402850451007.MRL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 41917000000 is determined by strict alignment across the following critical parameters:

• Current Rating: 7 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: Surface Mount (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
• Physical Dimensions: 0.240" L x 0.106" W x 0.106" H / 6.10mm x 2.69mm x 2.69mm (exact match required)

The Littelfuse 0451007.MRL satisfies all substitution criteria. While the package designation differs (2-SMD, Square End Block versus 2410), the physical dimensions remain identical, ensuring mechanical and electrical compatibility in board mount applications.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0451007.MRL is the direct functional equivalent for the obsolete 41917000000. Both components share identical electrical ratings (7A, 125VAC/VDC), response characteristics (Fast Blow), and physical dimensions (6.10mm x 2.69mm x 2.69mm).

The 0451007.MRL offers additional advantages for new designs and ongoing support: it maintains active product status with expanded regulatory approvals (CSA, PSE, UL versus cULus), achieves ROHS3 compliance, and provides higher breaking capacity (50A versus 35A AC/100A DC). The operating temperature range of -55°C to 125°C covers the majority of industrial applications, with the exception of systems requiring the full -65°C lower limit of the original part.

For applications requiring the complete -65°C to 125°C operating range, component selection must be evaluated against specific system requirements and thermal specifications.

Frequently Asked Questions (FAQ)

Q: Can the 0451007.MRL directly replace the 41917000000 in existing designs?

A: Yes. Both components share identical current ratings (7A), voltage ratings (125VAC/VDC), response time (Fast Blow), and physical dimensions (6.10mm x 2.69mm x 2.69mm). The package designation differs (2-SMD, Square End Block versus 2410), but the mechanical footprint remains unchanged, ensuring compatibility with existing board layouts.

Q: What is the difference in breaking capacity between these parts?

A: The 41917000000 specifies 35A AC and 100A DC breaking capacity. The 0451007.MRL specifies 50A breaking capacity. The 0451007.MRL provides equal or superior performance in this parameter.

Q: Does the operating temperature range difference affect substitution?

A: The 41917000000 operates from -65°C to 125°C, while the 0451007.MRL operates from -55°C to 125°C. For applications operating below -55°C, the original specification must be maintained. For standard industrial temperature ranges, the 0451007.MRL is suitable.

Q: What are the compliance differences?

A: The 41917000000 carries cULus approval and is RoHS non-compliant. The 0451007.MRL carries CSA, PSE, and UL approvals and is ROHS3 compliant. The 0451007.MRL is preferred for new designs subject to RoHS requirements.

Q: Are there inventory considerations for this substitution?

A: The 41917000000 is obsolete with limited stock availability. The 0451007.MRL is an active product with significantly higher inventory levels, ensuring supply chain continuity for ongoing production and support.