BK/HTC-65M Equivalent & Substitute Parts Reference

Part Overview

The BK/HTC-65M is a fuse holder cartridge designed for through-hole PCB mounting applications. Manufactured by Eaton - Electronics Division, this component accommodates 5mm x 20mm cartridge fuses in a single-circuit configuration with horizontal orientation. The product is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and mechanical compatibility for ongoing production and maintenance requirements.

Substiute Parts

BK/HTC-65M

Eaton - Electronics DivisionIn Stock: 935BK/HTC-65M Datasheet

Current PartRFQ

BK/HTC-15M

Eaton - Electronics DivisionIn Stock: 1552BK/HTC-15M Datasheet

SimilarRFQ

64900001039

Littelfuse Inc.In Stock: 1723464900001039 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/HTC-65M are qualified based on the following critical parameters that determine functional and mechanical interchangeability:

Mandatory Matching Parameters:

• Fuse Size: 0.197" Dia x 0.787" L (5mm x 20mm)
• Fuse Type: Cartridge
• Number of Circuits: 1
• Mounting Type: Through Hole
• Orientation: Horizontal
• Termination Style: PC Pin
• Moisture Sensitivity Level: 1 (Unlimited)

Both identified substitutes—BK/HTC-15M (Eaton) and 64900001039 (Littelfuse)—satisfy all mandatory compatibility criteria. These parts are classified as active products with current manufacturing status, providing reliable alternatives to the obsolete BK/HTC-65M for new designs and replacement applications.

Parameter Comparison

Engineering Selection Recommendations

BK/HTC-15M (Eaton - Electronics Division): This substitute maintains manufacturer continuity with the original BK/HTC-65M, both sourced from Eaton's Electronics Division. The part is active in production with ROHS3 compliance and REACH unaffected status. Selection of this substitute is appropriate for applications requiring consistency with the original equipment manufacturer's product line.

64900001039 (Littelfuse Inc.): This substitute provides an alternative from Littelfuse Inc., a primary supplier in the fuse holder market. The part is active in production with ROHS3 compliance and REACH unaffected status. The contact material differs (copper alloy versus brass), though both materials are tin-finished and suitable for PCB mounting applications. Higher inventory availability (17,182 pieces) supports supply chain continuity.

Both substitutes are qualified for direct replacement based on mechanical fit, electrical interface, and regulatory compliance. Selection between them depends on procurement preferences, supply chain considerations, and existing design validation with either manufacturer's product line.

Frequently Asked Questions (FAQ)

Q: Can BK/HTC-15M or 64900001039 be used as direct replacements for BK/HTC-65M?

A: Yes. Both substitutes match all critical parameters: 5mm x 20mm cartridge fuse accommodation, single-circuit configuration, through-hole mounting, horizontal orientation, PC pin termination, and MSL 1 rating. Mechanical and electrical compatibility is established.

Q: What is the difference between the BK/HTC-15M and 64900001039?

A: Both parts are functionally equivalent for the specified application. Primary differences are manufacturer (Eaton versus Littelfuse) and contact material (brass versus copper alloy). Both materials are tin-finished and suitable for PCB applications. The 64900001039 has higher inventory availability.

Q: Why does the main part BK/HTC-65M not specify voltage and current ratings?

A: The BK/HTC-65M is classified as a fuse holder without specified electrical ratings in the provided data. The substitute parts (BK/HTC-15M and 64900001039) are rated for 250V, 6.3A operation. Voltage and current handling capability should be verified against your specific application requirements.

Q: Are there compliance differences between the substitutes?

A: Both substitutes are ROHS3 compliant and REACH unaffected. Compliance status for the original BK/HTC-65M is not specified in the provided data. For new designs, the active substitutes with documented compliance are recommended.

Q: What is the significance of the contact material difference?

A: The BK/HTC-15M uses brass contacts while the 64900001039 uses copper alloy contacts. Both are tin-finished for corrosion resistance and PCB solderability. For standard PCB fuse holder applications, both materials provide equivalent performance. Material selection may be driven by specific environmental or thermal requirements in your application.

Q: How should I choose between the two substitutes?

A: Selection criteria include: (1) manufacturer preference for design continuity, (2) supply chain availability, (3) existing qualification history with either manufacturer's products, and (4) procurement cost. Both parts satisfy all technical compatibility requirements for the BK/HTC-65M application.