Littelfuse 0315.500MXP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0315.500MXP is a 500 mA, 250 V AC/DC slow-blow glass cartridge fuse with 3AB/3AG package configuration and through-hole mounting. This component is classified as Active product status. Substitute parts are identified when equivalent electrical and mechanical parameters are required for circuit protection applications where the primary part is unavailable or when design flexibility permits alternative qualified sources.

Substiute Parts

0315.500MXP

Littelfuse Inc.In Stock: 9340315.500MXP Datasheet

Current PartRFQ

0315.500HXP

Littelfuse Inc.In Stock: 11900315.500HXP Datasheet

Parametric EquivalentRFQ

3SBP 500-R

Bel Fuse Inc.In Stock: 9403SBP 500-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0315.500MXP are qualified based on the following critical parameters:

• Current Rating: 500 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)

Two substitute parts meet these criteria: the Littelfuse 0315.500HXP (parametric equivalent) and the Bel Fuse Inc. 3SBP 500-R (manufacturer-recommended equivalent).

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0315.500HXP is the primary parametric equivalent to the 0315.500MXP. Both parts are manufactured by Littelfuse Inc., share identical electrical and mechanical specifications, and maintain Active product status with equivalent regulatory certifications (CE, CSA, UL). This part is suitable for direct substitution in all applications.

The Bel Fuse Inc. 3SBP 500-R meets all critical electrical and mechanical parameters and carries equivalent regulatory approvals (CE, CSA, cULus). However, this part is classified as Obsolete product status. Selection of this substitute should be limited to applications where existing inventory must be utilized or where cross-manufacturer qualification has been completed. New designs should prioritize the Littelfuse 0315.500HXP.

Frequently Asked Questions (FAQ)

Q: Can the 0315.500HXP be used as a direct replacement for the 0315.500MXP?

A: Yes. Both parts are identical in current rating (500 mA), voltage rating (250 V AC), response time (Slow Blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), and mounting type (Through Hole). Both are Active products from the same manufacturer with equivalent certifications.

Q: Is the Bel Fuse 3SBP 500-R suitable for new designs?

A: The 3SBP 500-R meets all critical electrical and mechanical substitution parameters. However, its Obsolete product status indicates it is no longer in active production. New designs should specify the Littelfuse 0315.500HXP to ensure long-term supply availability.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of current rating (500 mA), voltage rating (250 V AC), response time (Slow Blow), package/case configuration (3AB, 3AG, 1/4" x 1-1/4"), mounting type (Through Hole), and fuse type (Cartridge, Glass).

Q: Are there dimensional differences between these parts?

A: The 0315.500MXP and 0315.500HXP have identical dimensions (0.275" Dia x 1.275" L). The 3SBP 500-R has minor dimensional variation (0.272" Dia x 1.280" L) but remains compatible with 3AB/3AG package specifications and through-hole mounting footprints.

Q: Do all substitute parts carry the same regulatory certifications?

A: The 0315.500MXP and 0315.500HXP both carry CE, CSA, and UL certifications. The 3SBP 500-R carries CE, CSA, and cULus certifications. All three parts meet the same regulatory framework for this product category.