SCHURTER 0034.7310 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.7310 is a 315 mA, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through hole radial mounting in vertical orientation. This component is classified as active product status with full cULus approval and ROHS3 compliance. Equivalent substitute parts are identified to provide procurement flexibility, inventory availability, and design continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

0034.7310

SCHURTER Inc.In Stock: 9370034.7310 Datasheet

Current PartRFQ

37403150000

Littelfuse Inc.In Stock: 213637403150000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for board mount fuses is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish direct substitutability:

Critical Matching Parameters:

• Current Rating: 315 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Breaking Capacity @ Rated Voltage: 50A (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)

The Littelfuse 37403150000 meets all critical electrical parameters and mechanical mounting requirements. Minor dimensional variation in height (0.315" vs 0.335") remains within acceptable tolerance for through hole radial mounting applications and does not affect functional performance or PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the SCHURTER 0034.7310 and Littelfuse 37403150000 are active product status components with full regulatory compliance. The SCHURTER part carries cULus approval, while the Littelfuse substitute carries both CSA and cULus approvals, providing expanded certification coverage. Both components meet ROHS3 compliance and REACH unaffected status requirements.

Selection between these parts should be based on:

• Inventory availability and lead time requirements
• Preferred supplier relationships and pricing
• PCB layout constraints (minor height difference of 0.020" / 0.50mm)
• Regulatory certification requirements for the end application

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 37403150000 be used as a direct replacement for the SCHURTER 0034.7310?

A: Yes. Both parts share identical electrical ratings (315 mA, 250 V AC, slow blow response) and mounting characteristics (through hole radial, vertical orientation). The 0.020" height difference does not affect functional performance or standard PCB mounting practices.

Q: What is the significance of the different melting I²t values (0.361 vs 0.26)?

A: Melting I²t represents the thermal energy required to melt the fuse element. While the values differ, both parts are rated for identical current and voltage specifications and meet the same 50A breaking capacity requirement. The difference reflects manufacturing process variations between manufacturers and does not affect substitutability for the specified 315 mA application.

Q: Are there any compliance differences between these parts?

A: The Littelfuse part carries additional CSA certification in addition to cULus, providing broader regulatory acceptance. Both parts are ROHS3 compliant and REACH unaffected. For applications requiring specific certification, verify end-use requirements.

Q: Does the dimensional difference affect PCB layout?

A: The height difference of 0.020" (0.50mm) is negligible for standard through hole radial mounting. PCB footprints designed for either part will accommodate both without modification. Verify clearance for any components in close proximity to the fuse location.

Q: What is the operating temperature range for both parts?

A: Both the SCHURTER 0034.7310 and Littelfuse 37403150000 operate across -40°C to 85°C, ensuring compatibility across standard industrial and commercial temperature environments.