Littelfuse 0315002.VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0315002.VXP is a 2A 250VAC slow-blow glass cartridge fuse in 3AB/3AG package format (1/4" x 1-1/4" axial). This through-hole mounted fuse is designed for circuit protection in AC/DC applications with a 100A breaking capacity and operates across -55°C to 125°C. The part is currently active in production. Substitute parts may be required due to supply constraints, regional availability, or specific application requirements where alternative manufacturers meet identical electrical and mechanical specifications.

Substiute Parts

0315002.VXP

Littelfuse Inc.In Stock: 8910315002.VXP Datasheet

Current PartRFQ

0034.5231

SCHURTER Inc.In Stock: 15430034.5231 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Littelfuse 0315002.VXP is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Package Format: 3AB/3AG, 1/4" x 1-1/4" (exact match required)
• Breaking Capacity: 100 A (exact match required)
• Operating Temperature: -55°C to 125°C (exact match required)

The SCHURTER 0034.5231 meets all electrical specifications and package requirements. However, this part is classified as obsolete and requires a separate holder for installation, whereas the Littelfuse 0315002.VXP is through-hole mounted. Both parts maintain ROHS3 compliance and equivalent approval certifications (CSA, UL).

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0315002.VXP is the primary selection for new designs and active production due to its active product status and comprehensive approval certifications (CE, CSA, PSE, UL). This part provides through-hole mounting compatibility without requiring additional holder components.

The SCHURTER 0034.5231 is electrically and mechanically equivalent but carries obsolete status. Selection of this substitute should be limited to legacy system maintenance or applications where existing holder infrastructure is already in place. The SCHURTER part maintains CSA and UL certifications, meeting core regulatory requirements, but lacks CE and PSE approvals present in the Littelfuse offering.

Both parts are ROHS3 compliant and REACH unaffected, suitable for applications requiring environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.5231 directly replace the Littelfuse 0315002.VXP in existing circuits?

A: Electrical substitution is valid; both parts share identical current rating (2A), voltage rating (250V AC), response time (slow blow), and breaking capacity (100A). However, the SCHURTER part requires a separate holder for installation, whereas the Littelfuse part is through-hole mounted. PCB layout modifications may be necessary.

Q: What is the significance of the 3AB/3AG package designation?

A: 3AB and 3AG are standardized package formats for glass cartridge fuses. Both the Littelfuse 0315002.VXP and SCHURTER 0034.5231 conform to this specification, ensuring mechanical compatibility with standard fuse holders rated for 1/4" x 1-1/4" cartridges.

Q: Why is the SCHURTER part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. While the part may remain available through inventory channels, long-term supply cannot be guaranteed. The Littelfuse 0315002.VXP, with active status, is recommended for new designs.

Q: Are there differences in thermal performance between these parts?

A: Both parts operate across -55°C to 125°C. The melting I²t values differ (Littelfuse: 77; SCHURTER: 47.1), indicating different thermal response characteristics. This difference does not affect substitution validity for applications within the specified operating temperature range.

Q: What certifications are critical for my application?

A: Both parts hold CSA and UL certifications. If CE or PSE approval is required, only the Littelfuse 0315002.VXP meets these standards. Verify certification requirements with your application's regulatory framework before selecting a substitute.