BK/HTB-22-R Equivalent & Substitute Parts

Part Overview

The BK/HTB-22-R is a cartridge fuse holder manufactured by Eaton - Electronics Division, rated for 20 A at 250V with panel mount configuration. This component is designed for single-circuit applications using 0.25" diameter by 1.26" length cartridge fuses (3AG, 1/4" x 1-1/4" SFE-20 format). The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and system support applications.

Substiute Parts

BK/HTB-22-R

Eaton - Electronics DivisionIn Stock: 771BK/HTB-22-R Datasheet

Current PartRFQ

03420012H

Littelfuse Inc.In Stock: 150003420012H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/HTB-22-R is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating: 250V (exact match required)
• Fuse Size: 0.25" Dia x 1.26" L / 6.35mm x 32mm (exact match required)
• Fuse Type: Cartridge (exact match required)
• Number of Circuits: 1 (exact match required)
• Mounting Type: Panel Mount (exact match required)
• Compatible Fuse Format: 3AG, 1/4" x 1-1/4" (SFE-20) (exact match required)

The substitute part 03420012H from Littelfuse Inc. meets all critical electrical and mechanical parameters. Differences in termination style (Quick Connect vs. Solder Lug), contact material, and contact finish do not affect functional equivalence for cartridge fuse holder applications where the primary function is mechanical retention and electrical connection of standard cartridge fuses.

Parameter Comparison

Engineering Selection Recommendations

The 03420012H from Littelfuse Inc. is the identified equivalent substitute for the obsolete BK/HTB-22-R. Selection of this substitute is based on:

Product Status: The BK/HTB-22-R is classified as obsolete. The 03420012H maintains active product status with Littelfuse Inc., ensuring ongoing availability and manufacturing support.

Electrical Equivalence: Both components share identical current rating (20 A), voltage rating (250V), and fuse compatibility specifications (3AG, 1/4" x 1-1/4" SFE-20 cartridge format).

Mechanical Equivalence: Both components feature identical fuse size dimensions (0.25" Dia x 1.26" L / 6.35mm x 32mm), single-circuit configuration, and panel mount orientation.

Regulatory Compliance: Both components carry identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications. The 03420012H is RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements.

Termination Consideration: The 03420012H uses Solder Lug termination, whereas the BK/HTB-22-R uses Quick Connect termination. Circuit board or panel integration design must accommodate this difference during installation.

Frequently Asked Questions (FAQ)

Q: Can the 03420012H directly replace the BK/HTB-22-R in all applications?

A: The 03420012H is electrically and mechanically equivalent for cartridge fuse holder functionality. The primary consideration is termination style: the 03420012H requires solder connection, while the BK/HTB-22-R uses quick connect terminals. Installation method must be adapted accordingly.

Q: What fuse types are compatible with both the BK/HTB-22-R and 03420012H?

A: Both holders accept 3AG cartridge fuses in the 1/4" x 1-1/4" (6.35mm x 32mm) format, designated as SFE-20. Fuses must be rated for 20 A at 250V maximum.

Q: Are there any compliance differences between the BK/HTB-22-R and 03420012H?

A: Both components share identical ECCN and HTSUS classifications. The 03420012H provides additional compliance documentation: RoHS3 Compliant and REACH Unaffected status, which may be required for new equipment designs or regulatory submissions.

Q: Why is the BK/HTB-22-R classified as obsolete?

A: Obsolete status indicates that Eaton - Electronics Division has discontinued manufacturing and support for this component. The 03420012H from Littelfuse Inc. provides functional continuity for systems requiring 20 A, 250V single-circuit cartridge fuse holder functionality.

Q: What is the difference between Quick Connect and Solder Lug termination?

A: Quick Connect termination (BK/HTB-22-R) uses 0.187" (4.7mm) spade connectors for push-on connection to panel wiring. Solder Lug termination (03420012H) requires direct soldering to circuit board traces or wire connections. Installation method and circuit design must accommodate the selected termination style.

Q: Are the contact materials and finishes functionally significant for fuse holder selection?

A: For cartridge fuse holder applications, contact material (Brass) and finish (Tin) on the 03420012H provide standard electrical conductivity and corrosion resistance. These specifications do not affect functional equivalence for standard fuse retention and electrical connection purposes.