Equivalent & Substitute Parts for Littelfuse 0664002.HXSL

Part Overview

The Littelfuse 0664002.HXSL is a 2A 250VAC board mount radial fuse with slow blow response characteristics, designed for through-hole mounting applications. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

0664002.HXSL

Littelfuse Inc.In Stock: 12150664002.HXSL Datasheet

Current PartRFQ

38212000410

Littelfuse Inc.In Stock: 277338212000410 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 38212000410 qualifies as a direct substitute based on the following critical parameters:

• Current Rating: 2 A (identical)
• Voltage Rating (AC): 250 V (identical)
• Fuse Type: Board Mount (Cartridge Style Excluded) (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: Radial, Can, Vertical (identical)
• Response Time: Slow Blow (identical)
• Breaking Capacity @ Rated Voltage: 100A (identical)
• Operating Temperature Range: -40°C ~ 85°C (identical)
• RoHS Status: ROHS3 Compliant (identical)

The substitute part belongs to the TR5® 382 series and maintains active product status, providing continuity for applications currently using the obsolete LT-5™ 664 series component.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 38212000410 is the appropriate substitute for the obsolete 0664002.HXSL. Both components are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters. The substitute part maintains active product status, ensuring long-term availability and supply chain continuity.

Both parts carry equivalent regulatory approvals including CCC, SEMKO, and VDE certifications. The substitute part additionally holds cURus, KC, and PSE/JET approvals, providing expanded compliance coverage for international applications.

Physical dimensions differ marginally (height: 0.333" vs. 0.315"), remaining within standard PCB footprint tolerances for radial through-hole mounting. The substitute exhibits lower DC cold resistance (0.028 Ohms vs. 0.039 Ohms), representing improved electrical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 38212000410 be used as a direct replacement for the 0664002.HXSL?

A: Yes. Both components share identical current rating (2A), voltage rating (250VAC), response time (slow blow), mounting type (through hole), and package configuration (radial, can, vertical). All critical electrical and mechanical parameters align, supporting direct substitution.

Q: What is the primary reason for substitution?

A: The 0664002.HXSL is classified as obsolete. The 38212000410 is an active product from the same manufacturer, providing equivalent functionality with assured ongoing availability.

Q: Are there dimensional differences between these parts?

A: Yes. The substitute part measures 0.335" Dia x 0.315" H (8.50mm x 8.00mm) compared to the original 0.335" Dia x 0.333" H (8.50mm x 8.45mm). The height difference of 0.018" (0.45mm) is within standard PCB footprint tolerances for radial through-hole components and does not affect electrical performance or mounting compatibility.

Q: Do both parts meet the same regulatory standards?

A: Both parts are ROHS3 compliant. The substitute part carries additional certifications (cURus, KC, PSE/JET) beyond those of the original part, providing expanded compliance for international markets.

Q: What is the difference in DC cold resistance?

A: The substitute part exhibits 0.028 Ohms compared to 0.039 Ohms for the original. This represents improved electrical performance with lower resistance characteristics.

Q: Are the melting I²t values equivalent?

A: The values differ slightly (16 vs. 17.8). Both values remain within the operational envelope for 2A slow blow fuses and do not affect substitution suitability for standard circuit protection applications.