BK/HBH-M Cartridge Fuse Holder 250V 16A PCB Equivalent & Substitute Parts

Part Overview

The BK/HBH-M is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for 5mm x 20mm fuses with a 16 A current rating at 250V. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part features through-hole mounting with horizontal orientation and PC pin termination, suitable for PCB integration in single-circuit applications.

Substiute Parts

BK/HBH-M

Eaton - Electronics DivisionIn Stock: 1025BK/HBH-M Datasheet

Current PartRFQ

BK/HBH-M-R

Eaton - Electronics DivisionIn Stock: 4085BK/HBH-M-R Datasheet

DirectRFQ

03450121H

Littelfuse Inc.In Stock: 237303450121H Datasheet

DirectRFQ

3101.0050

SCHURTER Inc.In Stock: 51133101.0050 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/HBH-M is determined by strict alignment of the following parameters: fuse size (5mm x 20mm), current rating (16 A), mounting type (through hole), orientation (horizontal), termination style (PC pin), number of circuits (1), and fuse type (cartridge). Voltage rating represents a critical design parameter; substitute parts may operate at equal or higher voltage ratings within the same application context.

The substitute parts are grouped as follows:

Direct Equivalent (Active Status): BK/HBH-M-R maintains identical electrical and mechanical specifications with upgraded RoHS3 compliance and active product status.

Voltage-Rated Substitutes (Higher Voltage Capability): 03450121H (Littelfuse Inc., 600V) and 3101.0050 (SCHURTER Inc., 400V) provide enhanced voltage ratings while maintaining all other critical parameters, enabling use in applications requiring higher voltage margins.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Maintained Specifications: BK/HBH-M-R is the primary substitute, offering identical electrical and mechanical parameters to the obsolete BK/HBH-M while providing active product status and ROHS3 compliance. This part is sourced from the same manufacturer (Eaton - Electronics Division) and series (HB PCB), ensuring design continuity.

For Applications Requiring Enhanced Voltage Margin: 03450121H (Littelfuse Inc., 600V rating) and 3101.0050 (SCHURTER Inc., 400V rating) are suitable for circuits designed to operate at 250V or below. Both parts maintain the 16 A current rating, 5mm x 20mm fuse size, through-hole mounting, horizontal orientation, and PC pin termination. Selection between these options depends on voltage headroom requirements and supplier availability. Both are ROHS3 compliant and carry REACH Unaffected status.

Compliance Considerations: All active substitute parts (BK/HBH-M-R, 03450121H, 3101.0050) meet ROHS3 compliance requirements, addressing regulatory requirements for new designs. The original BK/HBH-M is RoHS non-compliant and should not be specified for new applications.

Frequently Asked Questions (FAQ)

Q: Can BK/HBH-M-R be used as a direct replacement for BK/HBH-M? A: Yes. BK/HBH-M-R maintains identical electrical specifications (250V, 16 A), mechanical dimensions (5mm x 20mm), mounting configuration (through hole, horizontal, PC pin), and circuit count (1). The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between the voltage ratings of the substitute parts? A: The main part (BK/HBH-M) and its direct equivalent (BK/HBH-M-R) are rated for 250V. The Littelfuse 03450121H is rated for 600V, and the SCHURTER 3101.0050 is rated for 400V. All three substitute parts are electrically compatible with circuits designed for 250V operation, as they provide equal or higher voltage capability.

Q: Are there packaging differences between these parts? A: BK/HBH-M is supplied in standard packaging, while BK/HBH-M-R, 03450121H, and 3101.0050 are supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Which substitute part should be selected for new designs? A: BK/HBH-M-R is the recommended choice for new designs, as it provides direct equivalence to the obsolete part while meeting current RoHS3 compliance requirements and maintaining active product status with established supply chains.

Q: Can 03450121H or 3101.0050 be used interchangeably with BK/HBH-M-R? A: Yes, within the electrical constraints of the application. All three parts share identical mechanical and electrical parameters for the 16 A, 5mm x 20mm cartridge fuse holder category. Selection should be based on voltage rating requirements, supplier availability, and design margin preferences.

Q: What contact materials are used in these fuse holders? A: BK/HBH-M and BK/HBH-M-R do not specify contact material or finish. 03450121H uses brass contacts with tin finish. 3101.0050 uses copper alloy contacts with tin finish. These material specifications do not affect functional compatibility for standard 16 A, 250V applications.