Littelfuse 41913000000 Equivalent & Substitute Parts

Part Overview

The Littelfuse 41913000000 is a 3A 125VAC/VDC surface mount board-mounted fuse in 2410 (6125 Metric) package format with fast-blow response characteristics. 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 and carries cULus approval certification.

Substiute Parts

41913000000

Littelfuse Inc.In Stock: 100841913000000 Datasheet

Current PartRFQ

0451003.MRL

Littelfuse Inc.In Stock: 302130451003.MRL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 41913000000 is determined by the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating: 125 V AC / 125 V DC (exact match required)
• Fuse Type: Board Mount, Surface Mount configuration
• Response Time: Fast Blow characteristic
• Breaking Capacity: 50 A @ rated voltage
• Mounting: Surface Mount technology

The identified substitute part 0451003.MRL meets all electrical and mechanical substitution criteria. While package designation differs (2-SMD, Square End Block vs. 2410), both maintain identical physical dimensions (0.240" L x 0.106" W x 0.106" H / 6.10mm x 2.69mm x 2.69mm), ensuring mechanical compatibility in board-level applications.

Parameter Comparison

Engineering Selection Recommendations

The 0451003.MRL substitute part is electrically and mechanically equivalent to the 41913000000 across all critical operating parameters. The substitute offers the following advantages:

• Active product status ensures continued availability and supply chain stability
• ROHS3 compliance addresses environmental and regulatory requirements
• Expanded certification portfolio (CSA, PSE, UL) provides broader application approval
• Melting I²t value of 1.65 is within acceptable tolerance of the original 1.7 specification

The operating temperature lower limit of -55°C (versus -65°C on the original) represents a minor constraint applicable only to extreme cold-environment applications. For standard industrial and commercial applications operating within -55°C to 125°C, this substitution is directly compatible.

Frequently Asked Questions (FAQ)

Q: Can the 0451003.MRL be used as a direct replacement for 41913000000 in existing designs?

A: Yes. Both parts share identical electrical ratings (3A, 125VAC/VDC), fast-blow response, 50A breaking capacity, and physical dimensions. The substitute is mechanically and electrically compatible for board-level integration.

Q: What is the difference between the 2410 package and 2-SMD, Square End Block package designation?

A: These designations describe the same physical form factor with identical dimensions (6.10mm x 2.69mm x 2.69mm). The terminology reflects different manufacturer classification systems for surface-mount fuse packages. Both are compatible with standard PCB footprints designed for this size class.

Q: Does the lower operating temperature minimum (-55°C vs. -65°C) affect compatibility?

A: The substitute part operates reliably from -55°C to 125°C. Applications requiring operation below -55°C would require evaluation of the original part or alternative solutions. Most industrial and commercial applications operate within the -55°C to 125°C range.

Q: What certifications does the substitute part carry?

A: The 0451003.MRL carries CSA, PSE, and UL certifications, providing broader regulatory approval than the original cULus certification. This expanded certification portfolio supports applications across multiple regulatory jurisdictions.

Q: Is the substitute part RoHS compliant?

A: Yes. The 0451003.MRL is ROHS3 compliant, addressing environmental and regulatory requirements. The original 41913000000 is RoHS non-compliant.