Littelfuse 37013150430 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 37013150430 is a 3.15 A, 250 V AC/DC board mount fuse with fast blow response characteristics. This radial, can-style through-hole component is designed for circuit protection in industrial and commercial applications. The part maintains active product status with full compliance to international safety standards including CCC, cURus, PSE, SEMKO, and VDE certifications. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility are maintained across the same functional category.

Substiute Parts

37013150430

Littelfuse Inc.In Stock: 128937013150430 Datasheet

Current PartRFQ

37013150410

Littelfuse Inc.In Stock: 501237013150410 Datasheet

DirectRFQ

37313150410

Littelfuse Inc.In Stock: 214037313150410 Datasheet

Parametric EquivalentRFQ

37313150430

Littelfuse Inc.In Stock: 126637313150430 Datasheet

Parametric EquivalentRFQ

0034.6019

SCHURTER Inc.In Stock: 92800034.6019 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 37013150430 are classified based on strict electrical and mechanical parameter alignment:

Direct Manufacturer Substitutes (Littelfuse Series TR5® 370):

• Part 37013150410 maintains identical electrical specifications: 3.15 A, 250 V, fast blow response, 50 A breaking capacity, and matching physical dimensions (0.335" Dia x 0.315" H). This part differs only in packaging configuration within the same series.

Parametric Equivalents (Littelfuse Series TR5® 373):

• Parts 37313150410 and 37313150430 match all critical electrical parameters (3.15 A, 250 V, fast blow, 50 A breaking capacity) and physical dimensions. These parts belong to the TR5® 373 series with different melting I²t characteristics (1.9 vs. 3.1) and alternative certification bodies (CSA, cULus vs. CCC, cURus, PSE, SEMKO, VDE).

Cross-Manufacturer Equivalent (SCHURTER MSF 250 Series):

• Part 0034.6019 provides electrical equivalence (3.15 A, 250 V, fast blow response) with matching physical dimensions. This part has a lower breaking capacity (35 A vs. 50 A) and different melting I²t (5.4 vs. 3.1), with certifications from CCC, cURus, and VDE.

Substitution is valid when current rating, voltage rating, response time, mounting type, package style, and physical dimensions remain constant across all candidates.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - Littelfuse 37013150410: This direct manufacturer substitute from the same TR5® 370 series provides identical electrical and mechanical specifications with full compliance to CCC, cURus, PSE, SEMKO, and VDE standards. Selection is appropriate for applications requiring exact parameter matching and consistent certification coverage.

Alternative Selection - Littelfuse 37313150410 or 37313150430: These TR5® 373 series parts maintain electrical equivalence with identical current, voltage, and response characteristics. The reduced melting I²t (1.9 vs. 3.1) indicates faster thermal response. Certification coverage differs (CSA, cULus only), making these suitable for applications where these specific certifications satisfy regulatory requirements. Physical dimensions remain identical.

Cross-Manufacturer Alternative - SCHURTER 0034.6019: This MSF 250 series part provides electrical equivalence with matching current, voltage, and response specifications. The lower breaking capacity (35 A vs. 50 A) and higher melting I²t (5.4 vs. 3.1) indicate different thermal characteristics. Physical height differs slightly (0.335" vs. 0.315"). Selection is appropriate where SCHURTER certification (CCC, cURus, VDE) and MSF 250 series compatibility are acceptable.

Frequently Asked Questions (FAQ)

Q: Can I substitute 37013150410 for 37013150430 in my circuit board design? A: Yes. Both parts are from the Littelfuse TR5® 370 series with identical electrical parameters (3.15 A, 250 V, fast blow), breaking capacity (50 A), and physical dimensions (0.335" Dia x 0.315" H). Both maintain full compliance to CCC, cURus, PSE, SEMKO, and VDE standards.

Q: What is the difference between the TR5® 370 and TR5® 373 series? A: The primary difference is melting I²t: TR5® 370 parts have 3.1 I²t, while TR5® 373 parts have 1.9 I²t, indicating faster thermal response in the 373 series. Certification bodies also differ: 370 series includes PSE and SEMKO, while 373 series includes CSA. All other electrical and mechanical parameters remain equivalent.

Q: Is the SCHURTER 0034.6019 a direct replacement? A: The SCHURTER 0034.6019 provides electrical equivalence (3.15 A, 250 V, fast blow) with matching physical diameter. However, it has a lower breaking capacity (35 A vs. 50 A), higher melting I²t (5.4 vs. 3.1), and slightly different height (0.335" vs. 0.315"). Selection depends on whether these parameter differences and SCHURTER certifications are acceptable for your application.

Q: Do all substitute parts have the same physical dimensions? A: Nearly all parts share the same diameter (0.335" / 8.50mm). The main part and Littelfuse substitutes have height of 0.315" (8.00mm), while the SCHURTER part has height of 0.335" (8.50mm). Verify PCB footprint compatibility before selection.

Q: Which substitute part should I choose for maximum availability? A: The SCHURTER 0034.6019 has the highest inventory (9213 pcs), followed by Littelfuse 37013150410 (4903 pcs). Littelfuse 37313150430 has 1189 pcs, and the main part 37013150430 has 1186 pcs in stock.