Littelfuse 37002000430 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 37002000430 is a 200 mA, 250 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in TR5® 370 series applications. This component is actively produced and maintains full inventory availability. Substitute parts are identified based on matching electrical ratings, mechanical compatibility, and approval certifications to ensure direct functional equivalence in circuit protection applications.

Substiute Parts

37002000430

Littelfuse Inc.In Stock: 122237002000430 Datasheet

Current PartRFQ

37002000410

Littelfuse Inc.In Stock: 119137002000410 Datasheet

DirectRFQ

37302000410

Littelfuse Inc.In Stock: 159837302000410 Datasheet

Parametric EquivalentRFQ

0034.6007

SCHURTER Inc.In Stock: 12980034.6007 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 37002000430 are classified based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalents (Littelfuse):

• 37002000410: Identical electrical specifications and mechanical dimensions within the same TR5® 370 series
• 37302000410: Parametric equivalent from TR5® 373 series with matching current, voltage, and package specifications

Cross-Manufacturer Equivalent (SCHURTER):

• 0034.6007: Functionally equivalent from MSF 250 series with matching current rating, voltage rating, response time, and mechanical package

All substitutes maintain the following critical parameters:

• Current Rating: 200 mA
• Voltage Rating: 250 V AC
• Response Time: Fast Blow
• Mounting: Through Hole Radial
• Package Dimensions: 0.335" Dia x 0.315" H or 0.335" Dia x 0.335" H
• Operating Temperature: -40°C ~ 85°C

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 37002000410: Direct equivalent within the same manufacturer series. Identical electrical and mechanical specifications. Recommended for applications requiring exact part-for-part replacement with no design modifications.

Littelfuse 37302000410: Parametric equivalent from TR5® 373 series. Maintains all critical electrical parameters and mechanical compatibility. Melting I²t value of 0.0065 differs from the main part (0.03), indicating faster thermal response characteristics. Suitable for applications where thermal response variation is acceptable within circuit design tolerances.

SCHURTER 0034.6007: Cross-manufacturer equivalent from MSF 250 series. Electrical ratings and response characteristics match the main part. Breaking capacity is 35 A versus 50 A on the main part. Height dimension is 0.335" (8.50mm) versus 0.315" (8.00mm). Acceptable for applications where the reduced breaking capacity and minor dimensional variation do not conflict with PCB layout or circuit protection requirements.

All substitute parts carry active product status and maintain ROHS3 compliance with equivalent approval certifications (CCC, cURus, VDE, CSA, SEMKO).

Frequently Asked Questions (FAQ)

Q: Can 37002000410 be used as a direct replacement for 37002000430? A: Yes. Both parts share identical electrical ratings (200 mA, 250 V AC), response time (Fast Blow), mounting type (Through Hole), and mechanical package dimensions (0.335" Dia x 0.315" H). No design modifications are required.

Q: What is the difference between 37002000430 and 37302000410? A: Both parts have matching current, voltage, and response characteristics. The primary difference is the melting I²t value: 0.03 for 37002000430 versus 0.0065 for 37302000410. This indicates 37302000410 has faster thermal response. Both are mechanically compatible and electrically equivalent for the specified ratings.

Q: Can SCHURTER 0034.6007 replace Littelfuse 37002000430? A: Electrical compatibility is confirmed (200 mA, 250 V AC, Fast Blow). Two parameters differ: breaking capacity (35 A versus 50 A) and height dimension (0.335" versus 0.315"). Substitution is acceptable if the circuit design tolerates the reduced breaking capacity and the PCB layout accommodates the slightly taller package.

Q: Are all substitute parts RoHS compliant? A: Yes. All parts listed (37002000430, 37002000410, 37302000410, 0034.6007) are ROHS3 compliant.

Q: What approval certifications apply to these fuses? A: Littelfuse parts carry CCC, cURus, SEMKO, and VDE certifications. SCHURTER 0034.6007 carries CCC, cURus, and VDE certifications. All parts meet the same regulatory standards for board mount fuse applications.

Q: Do all substitute parts have the same operating temperature range? A: Yes. All parts operate within -40°C ~ 85°C, ensuring thermal compatibility across applications.