BK/HTB-28M Fuse Holder Cartridge 250V 16A Panel Mount - Equivalent & Substitute Parts

Part Overview

The BK/HTB-28M is a cartridge fuse holder designed for 5mm x 20mm fuses with a 16 ampere current rating at 250 volts. This component is a single-circuit panel mount fuseholder with quick connect termination (0.250" / 6.3mm). The part is classified as obsolete, making identification of active equivalent components essential for procurement and system continuity. Substitute parts must maintain identical electrical specifications and mechanical form factors to ensure direct functional replacement without circuit redesign.

Substiute Parts

BK/HTB-28M

Eaton - Electronics DivisionIn Stock: 1121BK/HTB-28M Datasheet

Current PartRFQ

BK/HTB-28M-R

Eaton - Electronics DivisionIn Stock: 1819BK/HTB-28M-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HTB-28M is determined by strict equivalence across the following parameters:

Critical Electrical Parameters:

• Current Rating: 16 A (exact match required)
• Voltage Rating: 250V (exact match required)
• Fuse Size: 5mm x 20mm cartridge (exact match required)

Critical Mechanical Parameters:

• Mounting Type: Panel Mount (exact match required)
• Termination Style: Quick Connect - 0.250" (6.3mm) (exact match required)
• Number of Circuits: 1 (exact match required)

Functional Classification:

• Fuse Type: Cartridge (exact match required)
• Fuseholder Type: Holder (exact match required)

The substitute part BK/HTB-28M-R meets all critical parameters identically to the main part, differing only in product status (active versus obsolete) and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Procurement: The BK/HTB-28M-R is the active production equivalent and is the appropriate selection for all new applications. This part maintains complete electrical and mechanical compatibility with the obsolete BK/HTB-28M while offering improved regulatory compliance status.

Compliance Considerations: The BK/HTB-28M-R achieves ROHS3 compliance, whereas the original BK/HTB-28M is RoHS non-compliant. For applications subject to RoHS directives or customer compliance requirements, the BK/HTB-28M-R is the mandated choice. Both parts are classified under identical ECCN and HTSUS codes, indicating equivalent trade and export status.

Product Status Impact: The obsolete status of BK/HTB-28M indicates discontinued manufacturing. The BK/HTB-28M-R, classified as active, ensures long-term supply chain availability and ongoing manufacturer support.

Inventory and Availability: Current inventory levels show 1744 pieces of BK/HTB-28M-R available in bulk packaging, compared to 1101 pieces of the obsolete BK/HTB-28M. The active part offers superior procurement reliability.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-28M-R be used as a direct replacement for BK/HTB-28M in existing assemblies?

A: Yes. The BK/HTB-28M-R is electrically and mechanically identical to the BK/HTB-28M across all critical parameters: 16 A current rating, 250V voltage rating, 5mm x 20mm cartridge fuse size, single-circuit configuration, panel mount orientation, and 0.250" quick connect termination. No circuit modifications or mechanical redesign are required.

Q: What is the significance of the product status difference between these parts?

A: The BK/HTB-28M is classified as obsolete, indicating discontinued production by the manufacturer. The BK/HTB-28M-R is active production, ensuring ongoing availability, manufacturer technical support, and compliance with current regulatory standards. For new procurement, the active part is the standard selection.

Q: Are there packaging differences between BK/HTB-28M and BK/HTB-28M-R?

A: The BK/HTB-28M-R is supplied in bulk packaging, whereas the original part packaging specification is not detailed in the provided data. Both parts are functionally identical; packaging differences do not affect electrical or mechanical performance.

Q: Does the ROHS3 compliance of BK/HTB-28M-R affect compatibility?

A: No. ROHS3 compliance is a regulatory and environmental certification that does not alter the electrical or mechanical function of the component. The BK/HTB-28M-R maintains complete compatibility with all applications designed for the BK/HTB-28M. For applications subject to RoHS directives, the BK/HTB-28M-R is the compliant choice.

Q: What fuse types are compatible with these fuseholders?

A: Both the BK/HTB-28M and BK/HTB-28M-R are designed for 5mm x 20mm cartridge fuses rated at 16 amperes and 250 volts. Only fuses meeting these exact specifications should be used.

Q: Are there any environmental or storage considerations for these parts?

A: Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control or storage requirements during handling and storage.