Equivalent & Substitute Parts for Littelfuse 37001250430

Part Overview

The Littelfuse 37001250430 is a 125 mA, 250 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in a vertical can configuration. This component is classified as Active product status and carries multiple international approvals including CCC, cURus, SEMKO, and VDE certifications. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and mounting configurations are maintained across the allowed parameter set for this fuse category.

Substiute Parts

37001250430

Littelfuse Inc.In Stock: 78437001250430 Datasheet

Current PartRFQ

37001250410

Littelfuse Inc.In Stock: 92337001250410 Datasheet

DirectRFQ

37301250410

Littelfuse Inc.In Stock: 424137301250410 Datasheet

Parametric EquivalentRFQ

0034.6005

SCHURTER Inc.In Stock: 15720034.6005 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 37001250430 are classified based on strict equivalence of the following parameters: current rating (125 mA), voltage rating (250 V AC), response time (Fast Blow), mounting type (Through Hole), package configuration (Radial, Can, Vertical), and operating temperature range (-40°C ~ 85°C). All identified substitutes maintain these core electrical and mechanical specifications. Variations in breaking capacity, melting I²t characteristics, series designation, or approval agency certifications do not disqualify a part from substitution eligibility when all primary parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance. The Littelfuse 37001250410 and 37001250430 are direct equivalents within the TR5® 370 series, differing only in internal part numbering and inventory availability. The Littelfuse 37301250410 represents a parametric equivalent from the TR5® 373 series with identical electrical and mechanical specifications but different approval agency certifications (CSA, cULus versus CCC, cURus, SEMKO, VDE). The SCHURTER 0034.6005 from the MSF 250 series maintains all core electrical parameters and mounting configuration but exhibits a 0.020" (0.50mm) height variance and reduced breaking capacity (35A versus 50A). Selection should be based on approval agency requirements for the target application and available inventory levels.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 37001250410 directly replace the 37001250430?

A: Yes. Both parts are from the Littelfuse TR5® 370 series and maintain identical electrical ratings (125 mA, 250 V AC), response time (Fast Blow), mechanical dimensions (0.335" Dia x 0.315" H), and mounting configuration (Through Hole, Radial, Can, Vertical).

Q: What is the difference between the Littelfuse TR5® 370 and TR5® 373 series?

A: The TR5® 373 series (37301250410) maintains equivalent electrical and mechanical specifications but carries different approval certifications (CSA, cULus) compared to the TR5® 370 series (CCC, cURus, SEMKO, VDE). Melting I²t characteristics also differ (0.0019 versus 0.0066).

Q: Is the SCHURTER 0034.6005 a suitable substitute?

A: The SCHURTER 0034.6005 maintains equivalent current rating, voltage rating, response time, and mounting type. However, it exhibits a 0.020" (0.50mm) greater height dimension and lower breaking capacity (35A versus 50A). Compatibility depends on PCB layout constraints and application breaking capacity requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant status and are suitable for applications requiring environmental compliance.

Q: What approval agencies certify these fuse parts?

A: The Littelfuse 37001250430 and 37001250410 carry CCC, cURus, SEMKO, and VDE approvals. The Littelfuse 37301250410 carries CSA and cULus approvals. The SCHURTER 0034.6005 carries CCC, cURus, and VDE approvals. Application requirements determine which certifications are necessary.