Littelfuse TR5® 373 37302000430 Board Mount Fuse 200mA 250VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 37302000430 is a 200 mA, 250 V AC/DC board mount fuse with fast blow response time, designed for through-hole radial mounting in compact applications. This TR5® 373 series fuse is actively manufactured and widely stocked. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

37302000430

Littelfuse Inc.In Stock: 94837302000430 Datasheet

Current PartRFQ

37302000410

Littelfuse Inc.In Stock: 159837302000410 Datasheet

DirectRFQ

37002000410

Littelfuse Inc.In Stock: 119137002000410 Datasheet

Parametric EquivalentRFQ

37002000430

Littelfuse Inc.In Stock: 122237002000430 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 37302000430 are classified based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent (37302000410): Identical electrical specifications including current rating, voltage rating, response time, breaking capacity, and physical dimensions. Differs only in internal manufacturing revision code. Interchangeable for all applications requiring TR5® 373 series performance.

Parametric Equivalents (37002000410, 37002000430): Belong to the TR5® 370 series with identical electrical performance across current rating, voltage rating, response time, breaking capacity, and physical dimensions. Key difference is melting I²t value (0.03 versus 0.0065) and approval agency certifications. These parts maintain functional equivalence for standard board mount fuse applications while offering alternative certification pathways.

Substitution is valid when the following parameters remain constant:

• Current Rating: 200 mA
• Voltage Rating (AC): 250 V
• Response Time: Fast Blow
• Mounting Type: Through Hole
• Package / Case: Radial, Can, Vertical
• Physical Dimensions: 0.335" Dia x 0.315" H (8.50mm x 8.00mm)
• Breaking Capacity @ Rated Voltage: 50 A

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and environmental regulatory alignment.

37302000410 (Direct Equivalent): Recommended as the primary substitute when TR5® 373 series continuity is required. Identical electrical and mechanical specifications with CSA and cULus certifications matching the main part.

37002000410 and 37002000430 (Parametric Equivalents): Suitable for applications where TR5® 370 series certification is acceptable. These parts provide equivalent electrical performance with expanded approval agency coverage (CCC, cURus, SEMKO, VDE). Selection depends on regional compliance requirements and certification pathway preferences.

All parts are through-hole radial mount fuses with identical physical dimensions, current ratings, voltage ratings, and response characteristics, ensuring direct board-level compatibility within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can 37302000410 be used as a direct replacement for 37302000430?

A: Yes. Both parts are TR5® 373 series fuses with identical electrical specifications (200 mA, 250 V AC, fast blow response) and physical dimensions (0.335" Dia x 0.315" H). The difference is an internal manufacturing revision code. They are functionally interchangeable.

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

A: The primary difference is the melting I²t value: TR5® 373 series has 0.0065, while TR5® 370 series has 0.03. Both series maintain identical current ratings, voltage ratings, response times, and physical dimensions. The TR5® 370 series also carries expanded approval agency certifications (CCC, cURus, SEMKO, VDE) compared to TR5® 373 (CSA, cULus).

Q: Are the physical dimensions identical across all substitute parts?

A: Yes. All listed parts share the same radial, can, vertical package with dimensions of 0.335" Dia x 0.315" H (8.50mm x 8.00mm), ensuring identical through-hole board mount compatibility.

Q: Which substitute part should I select for international applications?

A: For applications requiring broader regional certification coverage, 37002000410 or 37002000430 (TR5® 370 series) are recommended due to their CCC, cURus, SEMKO, and VDE approvals. For North American applications, 37302000430 or 37302000410 (TR5® 373 series) with CSA and cULus certifications are appropriate.

Q: Do all substitute parts have the same breaking capacity?

A: Yes. All listed parts have a breaking capacity of 50 A at rated voltage, maintaining identical fault protection performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.