Equivalent & Substitute Parts for BK/HTB-54M

Part Overview

The BK/HTB-54M is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 16 A at 250V operation in panel mount applications. This component accommodates 5mm x 20mm cartridge fuses with quick connect termination. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing system maintenance and new designs.

Substiute Parts

BK/HTB-54M

Eaton - Electronics DivisionIn Stock: 810BK/HTB-54M Datasheet

Current PartRFQ

BK/HTB-54M-R

Eaton - Electronics DivisionIn Stock: 850BK/HTB-54M-R Datasheet

DirectRFQ

03455HS1H

Littelfuse Inc.In Stock: 116703455HS1H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-54M is determined by the following critical parameters:

Direct Equivalents require identical specifications across all key parameters: 16 A current rating, 250V voltage rating, 5mm x 20mm fuse accommodation, panel mount configuration, single circuit design, cartridge fuse type, and quick connect termination.

Similar Substitutes share the same mechanical form factor (5mm x 20mm fuse size, panel mount, quick connect termination, single circuit) and voltage rating (250V) but differ in current rating or other secondary characteristics.

The BK/HTB-54M-R qualifies as a direct equivalent. The 03455HS1H qualifies as a similar substitute with a reduced current rating of 10 A.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The BK/HTB-54M-R is the primary substitute for the obsolete BK/HTB-54M. Both components share identical electrical and mechanical specifications. The BK/HTB-54M-R carries active product status and RoHS compliance, making it suitable for new designs and legacy system maintenance where 16 A at 250V operation is required.

For Current-Limited Applications: The 03455HS1H from Littelfuse Inc. provides mechanical and electrical compatibility within a reduced current envelope of 10 A. This substitute is applicable only in circuits where the maximum required current does not exceed 10 A. The 03455HS1H maintains identical fuse size, mounting configuration, and termination style, with ROHS3 compliance and active product status.

Compliance Considerations: Both substitute parts offer improved RoHS compliance compared to the obsolete main part. Selection between BK/HTB-54M-R and 03455HS1H depends on circuit current requirements and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the 03455HS1H replace the BK/HTB-54M in all applications?

A: The 03455HS1H is mechanically and electrically compatible only in applications where circuit current does not exceed 10 A. The BK/HTB-54M is rated for 16 A operation. Use 03455HS1H only when the application current requirement is 10 A or lower.

Q: What is the primary difference between BK/HTB-54M and BK/HTB-54M-R?

A: Both parts are electrically and mechanically identical with 16 A at 250V ratings. The BK/HTB-54M-R is the active production variant with RoHS compliance, while the BK/HTB-54M is obsolete. The BK/HTB-54M-R is the recommended direct replacement.

Q: Are all three parts compatible with 5mm x 20mm cartridge fuses?

A: Yes. All three parts accommodate 5mm x 20mm cartridge fuses and share identical quick connect termination at 0.187" (4.7mm).

Q: What packaging options are available?

A: BK/HTB-54M-R and 03455HS1H are supplied in bulk packaging. Packaging specifications should be confirmed with the supplier for specific order requirements.

Q: Do these parts require moisture sensitivity precautions?

A: The BK/HTB-54M and BK/HTB-54M-R have MSL rating of 1 (Unlimited), indicating no moisture sensitivity precautions are required. The 03455HS1H has MSL listed as Not Applicable.