Littelfuse 0293545.U Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0293545.U is a 45A automotive fuse rated for 32V DC operation, designed for automotive electrical protection applications requiring a slow-blow response characteristic. This fuse features an Auto Link package configuration and requires a compatible holder for installation. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

0293545.U

Littelfuse Inc.In Stock: 7430293545.U Datasheet

Current PartRFQ

0293545.H

Littelfuse Inc.In Stock: 8440293545.H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0293545.H serves as a parametric equivalent to the 0293545.U based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

• Current Rating: 45 A (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: Auto Link (exact match required)
• Fuse Type: Automotive (exact match required)
• Physical Dimensions: 0.906" L x 0.646" W x 1.205" H (exact match required)

The 0293545.H maintains all electrical protection characteristics and physical compatibility with systems designed for the 0293545.U, with the primary distinction being product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0293545.H is the direct active equivalent for the obsolete 0293545.U. Both components are manufactured by Littelfuse Inc. within the PAL™ 293 series and maintain identical electrical ratings, response characteristics, and physical dimensions. The 0293545.H carries Active product status, ensuring continued availability and supply chain support. Both parts meet ROHS3 compliance requirements and carry equivalent regulatory classifications (ECCN: EAR99; HTSUS: 8536.10.0020).

For applications currently specified with the 0293545.U, the 0293545.H provides direct functional and mechanical compatibility without modification to holder assemblies or circuit protection design parameters.

Frequently Asked Questions (FAQ)

Q: Can the 0293545.H be used as a direct replacement for the 0293545.U?

A: Yes. The 0293545.H is a parametric equivalent with identical current rating (45 A), voltage rating (32 V DC), response time (Slow Blow), package type (Auto Link), and physical dimensions. Both components are compatible with the same holder assemblies and provide equivalent circuit protection.

Q: What is the primary difference between these two part numbers?

A: The 0293545.U is classified as obsolete, while the 0293545.H maintains active product status. The 0293545.H is supplied in bulk packaging, whereas the 0293545.U packaging configuration is not specified. Functionally and mechanically, the components are identical.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and carry identical regulatory classifications. No compliance differences exist between the two components.

Q: Does the Auto Link package require a specific holder type?

A: Yes, both the 0293545.U and 0293545.H require a compatible Auto Link fuse holder for installation. The physical dimensions (0.906" L x 0.646" W x 1.205" H) must match the holder cavity specifications.

Q: What does the Slow Blow response time indicate?

A: Slow Blow fuses tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. This characteristic is identical in both the 0293545.U and 0293545.H.