Equivalent & Substitute Parts: BK/HTB-84M-R

Part Overview

The BK/HTB-84M-R 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 product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new design implementations.

Substiute Parts

BK/HTB-84M-R

Eaton - Electronics DivisionIn Stock: 761BK/HTB-84M-R Datasheet

Current PartRFQ

03450623H

Littelfuse Inc.In Stock: 126503450623H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-84M-R is determined by the following critical parameters:

Mechanical Compatibility:

• Fuse size must be 5mm x 20mm (0.197" Dia x 0.787" L)
• Mounting configuration must be panel mount
• Termination style must be quick connect 0.187" (4.7mm)

Electrical Compatibility:

• Fuse type must be cartridge
• Number of circuits must be 1
• Voltage rating must equal or exceed 250V
• Current rating must equal or exceed 16 A

The substitute part 03450623H (Littelfuse Inc., Series 345) satisfies all mechanical compatibility requirements and exceeds electrical specifications with 20 A current rating and 600V voltage rating, while maintaining identical fuse size and termination configuration.

Parameter Comparison

Engineering Selection Recommendations

The 03450623H from Littelfuse Inc. is a direct mechanical and electrical substitute for the obsolete BK/HTB-84M-R. Selection of this alternative is supported by the following factors:

Product Status: The substitute part maintains active product status, ensuring continued availability and supply chain reliability compared to the obsolete original component.

Compliance: The 03450623H is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Both parts share identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Electrical Margin: The substitute provides higher voltage (600V vs. 250V) and current (20 A vs. 16 A) ratings, ensuring operation within safe design margins for the original 250V, 16 A application.

Mechanical Interchangeability: Identical fuse size, mounting configuration, and termination style ensure direct physical and electrical integration without modification to existing panel mount installations.

Frequently Asked Questions (FAQ)

Q: Can the 03450623H replace the BK/HTB-84M-R in existing installations?

A: Yes. The 03450623H is mechanically and electrically compatible. Both components accept 5mm x 20mm cartridge fuses, feature identical quick connect 0.187" (4.7mm) termination, and are configured for single-circuit panel mount applications. The substitute's higher voltage and current ratings do not create incompatibility with the original 250V, 16 A specification.

Q: What is the significance of the higher voltage and current ratings on the substitute part?

A: The 03450623H operates at 600V and 20 A, compared to the original 250V and 16 A. These higher ratings indicate the substitute can safely handle the original application's electrical demands with additional design margin. The substitute will not cause overvoltage or overcurrent conditions in a 250V, 16 A circuit.

Q: Are there any contact material or finish differences between these parts?

A: The BK/HTB-84M-R does not specify contact material or finish in the provided data. The 03450623H features brass contact material with tin finish, providing corrosion resistance and reliable electrical connection suitable for panel mount fuse holder applications.

Q: What is the inventory status for these parts?

A: The BK/HTB-84M-R has 678 pieces in stock as new original inventory. The 03450623H has 1,175 pieces in stock as new original inventory in bulk packaging, providing greater availability for procurement.

Q: Do both parts share the same fuse size specification?

A: Yes. Both the BK/HTB-84M-R and 03450623H accommodate 5mm x 20mm cartridge fuses. This identical fuse size ensures that existing fuse inventory and replacement fuses are compatible with either holder without modification.