Littelfuse 0662002.HXSL Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0662002.HXSL is a 2A 250VAC board mount fuse with radial, can-style vertical packaging designed for through-hole applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates as a fast-blow fuse suitable for circuit protection in AC/DC applications requiring 250V rated protection at 2A current levels.

Substiute Parts

0662002.HXSL

Littelfuse Inc.In Stock: 11380662002.HXSL Datasheet

Current PartRFQ

37012000410

Littelfuse Inc.In Stock: 292937012000410 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0662002.HXSL is determined by the following critical parameters:

• Current Rating: Must be 2 A
• Voltage Rating (AC): Must be 250 V
• Response Time: Must be Fast Blow
• Mounting Type: Must be Through Hole
• Fuse Type: Must be Board Mount (Cartridge Style Excluded)
• Package Style: Must be Radial, Can, Vertical

The substitute part 37012000410 meets all mandatory electrical and mechanical criteria. Both components share identical current, voltage, response characteristics, and mounting configurations. Dimensional variations (height: 0.333" vs 0.315") remain within acceptable tolerance for standard through-hole board layouts. The substitute represents an active product from the same manufacturer with enhanced breaking capacity and improved thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

The 37012000410 is the direct functional equivalent for the obsolete 0662002.HXSL. Both components satisfy identical electrical specifications (2A, 250VAC, fast-blow response) and mechanical requirements (through-hole, radial can mounting).

The substitute offers operational advantages: active product status ensures long-term availability, enhanced breaking capacity (50A vs 35A) provides superior fault protection margin, and defined operating temperature range (-40°C to 85°C) supports broader environmental applications. The lower melting I²t value (0.98 vs 1.33) indicates faster thermal response, improving circuit protection performance.

Both parts maintain ROHS3 compliance and share common regulatory approvals (SEMKO, VDE). The 0.018" height reduction in the substitute (8.00mm vs 8.45mm) is negligible for standard PCB layouts and does not impact footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 37012000410 directly replace the 0662002.HXSL in existing designs?

A: Yes. Both components share identical current rating (2A), voltage rating (250VAC), response time (fast-blow), and mounting configuration (through-hole radial can). Dimensional differences are within acceptable tolerance for standard board layouts.

Q: What is the significance of the breaking capacity difference (35A vs 50A)?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt. The substitute's higher rating (50A) provides enhanced protection margin without affecting normal operation at the 2A rated current.

Q: Does the lower melting I²t value affect circuit protection?

A: No. The lower I²t (0.98 vs 1.33) indicates faster thermal response, which improves protection speed. This is a performance enhancement, not a limitation.

Q: Are there any PCB layout considerations for the height difference?

A: The 0.018" height reduction (8.00mm vs 8.45mm) is negligible. Standard through-hole spacing accommodates both dimensions without modification.

Q: What certifications apply to the substitute part?

A: The 37012000410 holds CCC, cURus, PSE, SEMKO, and VDE approvals. It maintains ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer applications.

Q: Is the substitute part currently available?

A: Yes. The 37012000410 is classified as active product with 2914 units in stock, ensuring reliable supply for new designs and production runs.