HTB-52I-R Equivalent & Substitute Parts Reference

Part Overview

The HTB-52I-R is a cartridge fuse holder manufactured by Eaton - Electronics Division, designed for panel mount applications in 250V circuits with a 20A current rating. This single-circuit holder accommodates 0.25" diameter by 1.26" length cartridge fuses and features quick connect termination for 0.187" terminals. The product is Active status and RoHS Compliant, making it suitable for modern electronic equipment requiring compliance with environmental regulations. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained or when design specifications permit functional alternatives within the same application category.

Substiute Parts

HTB-52I-R

Eaton - Electronics DivisionIn Stock: 1004HTB-52I-R Datasheet

Current PartRFQ

BK/HTB-52I-R

Eaton - Electronics DivisionIn Stock: 3906BK/HTB-52I-R Datasheet

DirectRFQ

BK1-HTJ-605I

Eaton - Electronics DivisionIn Stock: 1996BK1-HTJ-605I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HTB-52I-R are classified based on strict alignment with electrical and mechanical parameters that determine functional compatibility:

Direct Equivalent Substitute: The BK/HTB-52I-R maintains identical electrical specifications (250V, 20A, 1 circuit) and mechanical parameters (fuse size 0.25" Dia x 1.26" L, cartridge type, panel mount, quick connect termination). This part represents a direct manufacturer variant within the same HTB series and is classified as a direct equivalent.

Similar Substitute with Parameter Variance: The BK1-HTJ-605I shares core compatibility parameters (250V voltage, cartridge fuse type, 1 circuit, panel mount, 0.25" diameter fuse accommodation) but differs in current rating (10A versus 20A) and termination style (solder lug versus quick connect). This part is classified as a similar substitute applicable only when circuit current requirements do not exceed 10A and solder lug termination is acceptable for the application.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The BK/HTB-52I-R is the appropriate selection when a direct equivalent to HTB-52I-R is required. Both parts maintain identical electrical ratings (250V, 20A), mechanical dimensions (0.25" Dia x 1.26" L cartridge fuse accommodation), and termination compatibility (quick connect 0.187"). The BK/HTB-52I-R carries ROHS3 Compliant status, representing an updated compliance designation within the same product line. Both parts are Active status with unlimited moisture sensitivity rating.

For Current-Limited Applications: The BK1-HTJ-605I is applicable only in circuits where the maximum current requirement does not exceed 10A. This part is suitable for lower-current protection applications within the same 250V voltage class. The solder lug termination requires PCB or wire connection compatibility different from the quick connect style of the HTB-52I-R. Selection of this part requires confirmation that the 10A current rating is adequate for the intended circuit and that solder lug termination is compatible with the installation method.

Compliance Considerations: All three parts maintain Active product status and MSL 1 (Unlimited) rating. The HTB-52I-R and BK1-HTJ-605I are RoHS Compliant; the BK/HTB-52I-R is ROHS3 Compliant. Selection should account for specific regulatory requirements of the end application and regional compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-52I-R be used as a direct replacement for HTB-52I-R? A: Yes. The BK/HTB-52I-R is a direct equivalent substitute. Both parts share identical electrical specifications (250V, 20A), mechanical parameters (0.25" Dia x 1.26" L fuse size), and termination style (quick connect 0.187"). The parts are interchangeable in applications designed for the HTB-52I-R.

Q: Under what conditions can BK1-HTJ-605I substitute for HTB-52I-R? A: The BK1-HTJ-605I can substitute only when the circuit current requirement does not exceed 10A. The HTB-52I-R is rated for 20A; the BK1-HTJ-605I is rated for 10A. Additionally, the BK1-HTJ-605I uses solder lug termination instead of quick connect termination, requiring different installation methods. Substitution requires verification that both the reduced current rating and alternative termination style are compatible with the application.

Q: What is the difference between quick connect and solder lug termination? A: Quick connect termination (HTB-52I-R and BK/HTB-52I-R) uses 0.187" spade connectors that slide onto mating terminals, suitable for panel-mount applications with quick-disconnect requirements. Solder lug termination (BK1-HTJ-605I) requires direct soldering to PCB pads or wire connections, suitable for permanent installations where solder joint reliability is acceptable.

Q: Are all three parts RoHS compliant? A: Yes. HTB-52I-R and BK1-HTJ-605I are RoHS Compliant. BK/HTB-52I-R is ROHS3 Compliant, representing an updated compliance standard. All three parts meet RoHS environmental requirements and are suitable for applications requiring compliance with RoHS directives.

Q: What fuse types are compatible with these holders? A: All three holders accommodate 3AG cartridge fuses with 0.25" diameter. The HTB-52I-R and BK/HTB-52I-R specifically reference 1/4" x 1-1/4" (SFE-20) fuses. The BK1-HTJ-605I accommodates 1/4" diameter fuses. Fuse selection must match the holder's mechanical cavity and the circuit's current protection requirements.

Q: Can these fuse holders be used in applications exceeding 250V? A: No. All three parts are rated for 250V maximum. Use in higher voltage applications exceeds the rated specification and creates safety and reliability risks. Application voltage must not exceed 250V.

Q: What is the inventory status for each part? A: HTB-52I-R has 914 pieces in stock. BK/HTB-52I-R has 3,849 pieces in stock. BK1-HTJ-605I has 1,940 pieces in stock. Inventory levels are subject to change and should be verified at time of procurement.