Equivalent & Substitute Parts for BK/HTB-56M

Part Overview

The BK/HTB-56M is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 16 A at 250V single-circuit panel mount applications with 5mm x 20mm cartridge fuses. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing system maintenance and new design implementations. The availability of active-status alternatives ensures continuity of supply and access to updated compliance certifications.

Substiute Parts

BK/HTB-56M

Eaton - Electronics DivisionIn Stock: 918BK/HTB-56M Datasheet

Current PartRFQ

BK/HTB-56M-R

Eaton - Electronics DivisionIn Stock: 1232BK/HTB-56M-R Datasheet

DirectRFQ

03455HS8H

Littelfuse Inc.In Stock: 75603455HS8H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for cartridge fuse holders is determined by the following critical parameters: current rating, voltage rating, fuse size compatibility, number of circuits, mounting type, and termination style. Parts are grouped into two categories based on these criteria:

Direct Equivalent (Same Electrical and Mechanical Specifications):

• BK/HTB-56M-R: Identical specifications to the main part with active product status and improved compliance certifications.

Similar Substitute (Compatible Mechanical Interface, Reduced Current Rating):

• 03455HS8H: Maintains voltage rating, fuse size, mounting type, and termination style. Current rating is 10 A versus 16 A for the main part.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: BK/HTB-56M-R is the primary equivalent part. It maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. This part is suitable for all applications currently using BK/HTB-56M.

For Current-Limited Applications: 03455HS8H from Littelfuse Inc. is applicable only in circuits designed for 10 A maximum operation. This part shares mechanical compatibility (fuse size, mounting, termination) and voltage rating but operates at a reduced current capacity. Selection of this part requires confirmation that the circuit current requirement does not exceed 10 A.

Compliance Considerations: Both substitute parts carry ROHS3 compliance and REACH Unaffected status, providing regulatory advantages over the obsolete BK/HTB-56M. The transition to active-status parts ensures continued availability and support.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-56M-R be used as a direct replacement for BK/HTB-56M? A: Yes. BK/HTB-56M-R is electrically and mechanically identical, with identical current rating (16 A), voltage rating (250V), fuse size (5mm x 20mm), mounting type (panel mount), and termination style (Quick Connect - 0.250"). The primary advantage is active product status and improved compliance certifications.

Q: Under what conditions can 03455HS8H substitute for BK/HTB-56M? A: 03455HS8H can substitute only in applications where the circuit current requirement is 10 A or less. The part maintains mechanical compatibility (fuse size, mounting, termination) and voltage rating (250V) but has a reduced current rating of 10 A compared to the 16 A rating of BK/HTB-56M.

Q: What is the difference in packaging between the substitute parts? A: BK/HTB-56M-R is supplied in bulk packaging. 03455HS8H is also supplied in bulk packaging. Both differ from the original BK/HTB-56M packaging specification.

Q: Are there any compliance differences between the three parts? A: BK/HTB-56M is RoHS non-compliant. Both BK/HTB-56M-R and 03455HS8H are ROHS3 compliant and REACH unaffected, providing regulatory advantages for new designs and applications subject to environmental compliance requirements.

Q: What is the inventory status of each part? A: BK/HTB-56M has 818 pieces in stock (obsolete status). BK/HTB-56M-R has 1200 pieces in stock (active status). 03455HS8H has 733 pieces in stock (active status).