BK1/HTC-40M Fuse Holder Equivalent & Substitute Parts

Part Overview

The BK1/HTC-40M is a cartridge fuse holder manufactured by Eaton - Electronics Division, rated for 10 A at 250V with panel mount configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing procurement and system maintenance. The fuse holder accommodates 5mm x 20mm cartridge fuses with horizontal orientation and solder lug termination.

Substiute Parts

BK1/HTC-40M

Eaton - Electronics DivisionIn Stock: 1176BK1/HTC-40M Datasheet

Current PartRFQ

HTB-94M-R

Eaton - Electronics DivisionIn Stock: 709HTB-94M-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK1/HTC-40M is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Fuse size: 5mm x 20mm cartridge format
• Voltage rating: 250V minimum
• Mounting type: Panel mount configuration
• Number of circuits: Single circuit
• Fuse holder type: Cartridge holder

Allowable Variation Parameters:

• Current rating: May exceed the original 10 A specification, provided the fuse holder accommodates the same cartridge dimensions and voltage rating
• Termination style: Alternative termination methods (Quick Connect vs. Solder Lug) are acceptable if mechanical and electrical compatibility is maintained
• Product status: Active status parts are preferred for obsolete components

The substitute part HTB-94M-R meets the mandatory compatibility criteria while offering enhanced current capacity (16 A) and active product status.

Parameter Comparison

Engineering Selection Recommendations

HTB-94M-R as Primary Substitute:

The HTB-94M-R is the designated substitute for the obsolete BK1/HTC-40M. Both components share identical voltage (250V), fuse size (5mm x 20mm), mounting configuration (panel mount), and circuit count (1 circuit). The HTB-94M-R provides increased current capacity (16 A vs. 10 A), which does not compromise compatibility with the original fuse holder footprint or cartridge interface.

Compliance Advantage:

The HTB-94M-R holds active product status and RoHS compliance certification, addressing regulatory and supply chain continuity concerns associated with the obsolete BK1/HTC-40M. The non-compliant status of the original part makes transition to the substitute necessary for new designs and long-term procurement strategies.

Termination Consideration:

The HTB-94M-R employs Quick Connect termination (0.187" / 4.7mm) in place of the original solder lug configuration. This termination difference requires circuit board layout modification or connector adaptation during implementation.

Frequently Asked Questions (FAQ)

Q: Can HTB-94M-R directly replace BK1/HTC-40M without modification?

A: The HTB-94M-R is mechanically and electrically compatible with the same 5mm x 20mm cartridge fuses and 250V rating. However, the termination style differs (Quick Connect vs. Solder Lug), requiring connection method adaptation in the circuit design.

Q: Why is the current rating higher on the substitute part?

A: The HTB-94M-R is rated for 16 A while the original is 10 A. Both accommodate identical cartridge fuse dimensions and voltage. The higher current rating reflects the fuse holder's capability and does not affect compatibility with lower-current fuses or applications.

Q: Is RoHS compliance mandatory for substitution?

A: The HTB-94M-R is RoHS compliant while the BK1/HTC-40M is not. For applications subject to RoHS regulations or environmental standards, the compliant substitute is required. For legacy systems without regulatory constraints, non-compliance status alone does not prevent substitution.

Q: What is the inventory status of these parts?

A: The BK1/HTC-40M has 1135 pieces in stock (obsolete status). The HTB-94M-R has 676 pieces available (active status). Inventory levels should be verified at time of procurement.

Q: Are there other substitutes available?

A: Based on the provided data, HTB-94M-R is the identified substitute. Additional alternatives may exist within Eaton's product portfolio but are not included in this reference.