BK/HTB-44M Equivalent & Substitute Parts

Part Overview

The BK/HTB-44M is a cartridge fuse holder manufactured by Eaton - Electronics Division, rated for 16 A at 250V with panel mount configuration. This component is designed for single-circuit applications using 5mm x 20mm cartridge fuses with quick connect termination. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure procurement availability for new production and field replacement applications.

Key Parameters

Parameter	Value
Current Rating	16 A
Voltage Rating	250V
Fuse Size	5mm x 20mm (0.197" Dia x 0.787" L)
Fuse Type	Cartridge
Mounting Type	Panel Mount
Number of Circuits	1
Termination Style	Quick Connect - 0.187" (4.7mm)
Fuseholder Type	Holder

Substitute Part Grouping Explanation

Substitution of the BK/HTB-44M is determined by electrical and mechanical parameter equivalence. The substitute part must maintain identical specifications across the following critical parameters: current rating (16 A), voltage rating (250V), fuse size (5mm x 20mm), fuse type (cartridge), mounting configuration (panel mount), circuit count (1), and termination style (quick connect 0.187"). The BK/HTB-44M-R satisfies all these requirements and is classified as an active product, providing direct functional and physical interchangeability.

Parameter Comparison

Parameter	BK/HTB-44M	BK/HTB-44M-R	Match
Manufacturer	Eaton - Electronics Division	Eaton - Electronics Division	Yes
Series	HTB	HTB	Yes
Current Rating (Amps)	16 A	16 A	Yes
Voltage	250V	250V	Yes
Fuse Size	5mm x 20mm	5mm x 20mm	Yes
Fuse Type	Cartridge	Cartridge	Yes
Mounting Type	Panel Mount	Panel Mount	Yes
Number of Circuits	1	1	Yes
Termination Style	Quick Connect - 0.187" (4.7mm)	Quick Connect - 0.187" (4.7mm)	Yes
Fuseholder Type	Holder	Holder	Yes
Product Status	Obsolete	Active	Functional Upgrade
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Compliance Upgrade
REACH Status	Not specified	REACH Unaffected	Documented
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
ECCN	EAR99	EAR99	Yes
HTSUS	8538.90.8180	8538.90.8180	Yes

Engineering Selection Recommendations

The BK/HTB-44M-R is the direct equivalent substitute for the obsolete BK/HTB-44M. Both components are manufactured by Eaton - Electronics Division within the HTB series and provide identical electrical and mechanical performance across all specified parameters. The BK/HTB-44M-R offers two significant advantages: it maintains active product status with confirmed inventory availability (1943 pcs in stock), and it achieves ROHS3 compliance compared to the non-compliant status of the original part. For applications requiring regulatory compliance with modern environmental standards, the BK/HTB-44M-R is the appropriate selection. Both parts share identical moisture sensitivity classification, export control designation, and tariff classification, ensuring no additional compliance burden during transition.

Frequently Asked Questions (FAQ)

Question	Answer
Can BK/HTB-44M-R be used as a direct replacement for BK/HTB-44M?	Yes. Both components are electrically and mechanically identical across all specified parameters: 16 A current rating, 250V voltage rating, 5mm x 20mm cartridge fuse compatibility, panel mount configuration, single circuit design, and quick connect 0.187" termination. Physical form factor and mounting footprint are identical.
What is the primary reason to transition from BK/HTB-44M to BK/HTB-44M-R?	The BK/HTB-44M is classified as obsolete with no active manufacturing status. The BK/HTB-44M-R is an active product with documented inventory availability. Additionally, the BK/HTB-44M-R achieves ROHS3 compliance, meeting current environmental regulatory requirements.
Are there any electrical performance differences between these parts?	No. Both components maintain identical electrical specifications: 16 A current rating, 250V voltage rating, and single-circuit cartridge fuse holder design. Performance in circuit operation is equivalent.
Do these parts require different mounting procedures?	No. Both components use identical panel mount configuration with quick connect 0.187" (4.7mm) termination. Mounting procedures, hole patterns, and installation methods are identical.
What fuse types are compatible with both parts?	Both BK/HTB-44M and BK/HTB-44M-R accept 5mm x 20mm cartridge fuses rated for 16 A at 250V. Fuse compatibility is identical between the two components.
Is there a packaging difference between BK/HTB-44M and BK/HTB-44M-R?	The BK/HTB-44M-R is supplied in bulk packaging. Original packaging specifications for BK/HTB-44M are not provided in the technical data. Confirm packaging requirements with procurement specifications for your application.
Are export control classifications identical?	Yes. Both components share identical ECCN classification (EAR99) and HTSUS tariff code (8538.90.8180). Export control and customs documentation requirements are equivalent.
What is the moisture sensitivity level for these components?	Both BK/HTB-44M and BK/HTB-44M-R are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.