Littelfuse 37202000511 Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 37202000511 is a 200 mA, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through-hole radial mounting in TR5® 372 series applications. This fuse is active in production and widely stocked. Substitute parts are identified to support inventory management, supply chain continuity, and design flexibility where equivalent electrical and mechanical parameters are maintained.

Substiute Parts

37202000511

Littelfuse Inc.In Stock: 74537202000511 Datasheet

Current PartRFQ

37202000411

Littelfuse Inc.In Stock: 130937202000411 Datasheet

Parametric EquivalentRFQ

37202000431

Littelfuse Inc.In Stock: 83537202000431 Datasheet

Parametric EquivalentRFQ

37402000410

Littelfuse Inc.In Stock: 204937402000410 Datasheet

Parametric EquivalentRFQ

37402000430

Littelfuse Inc.In Stock: 114637402000430 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Current Rating: 200 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Physical Dimensions: 0.335" Dia x 0.315" H / 8.50mm x 8.00mm (exact match required)
• Response Time: Slow Blow (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)

All substitute parts listed meet these core electrical and mechanical criteria. Variations in secondary parameters such as Breaking Capacity, Melting I²t, DC Cold Resistance, and approval agency certifications do not disqualify substitution but are documented for engineering reference.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the 37202000511 across core parameters. Selection among substitutes should be based on:

Certification Alignment: The main part 37202000511 carries CCC, cURus, KC, SEMKO, and VDE approvals. Parts 37202000411 and 37202000431 (TR5® 372 series) retain CCC, cURus, SEMKO, and VDE certifications. Parts 37402000410 and 37402000430 (TR5® 374 series) carry CSA and cULus certifications. Verify that the selected substitute meets the regulatory requirements of the target application.

Series Compatibility: TR5® 372 series parts (37202000411, 37202000431) are direct series equivalents to the main part. TR5® 374 series parts (37402000410, 37402000430) represent an alternative series with identical electrical ratings but different internal characteristics (Breaking Capacity, Melting I²t, DC Cold Resistance).

Inventory Availability: Part 37402000410 offers the highest stock level (2028 Pcs), followed by 37202000411 (1280 Pcs) and 37202000431 (760 Pcs).

Product Status: All parts are active in production.

Frequently Asked Questions (FAQ)

Q: Can 37202000411 or 37202000431 be used as direct replacements for 37202000511?

A: Yes. Both parts are electrically and mechanically equivalent, sharing the same current rating (200 mA), voltage rating (250 V AC), response time (Slow Blow), mounting type (Through Hole), package (Radial, Can, Vertical), and physical dimensions (0.335" Dia x 0.315" H). Both are TR5® 372 series parts. Verify that the target application accepts the certification set (CCC, cURus, SEMKO, VDE).

Q: What is the difference between TR5® 372 and TR5® 374 series substitutes?

A: Both series maintain the same electrical ratings (200 mA, 250 V AC) and physical dimensions. The TR5® 374 series (37402000410, 37402000430) differs in Breaking Capacity (50 A vs. 35 A), Melting I²t (0.1 vs. 0.2 or 0.312), and DC Cold Resistance (1.2 Ohms vs. unspecified or 0.575 Ohms). TR5® 374 parts carry CSA and cULus certifications instead of CCC, cURus, SEMKO, and VDE. Confirm that the application's regulatory and performance requirements align with the selected series.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the main part 37202000511.

Q: What determines whether a part can substitute for 37202000511?

A: Substitution is based on exact equivalence across current rating (200 mA), voltage rating (250 V AC), response time (Slow Blow), mounting type (Through Hole), package type (Radial, Can, Vertical), physical dimensions (0.335" Dia x 0.315" H), and operating temperature range (-40°C ~ 85°C). All listed parts meet these criteria. Secondary parameters such as Breaking Capacity, Melting I²t, and DC Cold Resistance may vary and should be evaluated against specific application requirements.

Q: Can I use 37402000410 or 37402000430 if my application requires CCC or VDE certification?

A: No. Parts 37402000410 and 37402000430 carry CSA and cULus certifications only. If your application requires CCC, cURus, SEMKO, or VDE approval, use 37202000411 or 37202000431 instead.