HTB-66I-R Equivalent & Substitute Parts Reference

Part Overview

The HTB-66I-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 component is classified as Active product status and is RoHS Compliant. The HTB-66I-R accommodates 3AG cartridge fuses with dimensions of 0.25" Dia x 1.26" L (6.35mm x 32mm). Substitute parts are identified when identical electrical specifications, mechanical dimensions, mounting configuration, and termination style are maintained across alternative part numbers or manufacturer variants.

Substiute Parts

HTB-66I-R

Eaton - Electronics DivisionIn Stock: 1143HTB-66I-R Datasheet

Current PartRFQ

BK/HTB-66I-R

Eaton - Electronics DivisionIn Stock: 1129BK/HTB-66I-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HTB-66I-R is determined by strict equivalence across the following parameters:

• Voltage Rating: Must be 250V
• Current Rating: Must be 20 A
• Fuse Size and Type: Must accommodate 0.25" Dia x 1.26" L (6.35mm x 32mm) cartridge fuses
• Number of Circuits: Must be single circuit (1)
• Mounting Configuration: Must be panel mount
• Termination Style: Must be Quick Connect - 0.250" (6.3mm)
• Fuse Compatibility: Must support 3AG, 1/4" x 1-1/4" (SFE-20) fuses

The substitute part BK/HTB-66I-R meets all these criteria and is therefore classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both HTB-66I-R and BK/HTB-66I-R are Active status products from Eaton - Electronics Division with identical electrical and mechanical specifications. The BK/HTB-66I-R carries ROHS3 Compliant certification, which represents an enhanced compliance standard compared to the standard RoHS Compliant designation of the HTB-66I-R. Both parts maintain Moisture Sensitivity Level 1 (Unlimited) and share identical ECCN and HTSUS classifications. Selection between these parts may be determined by supply chain availability, inventory levels, or specific regulatory requirements mandating ROHS3 compliance. Current inventory shows 1078 Pcs for HTB-66I-R and 1070 Pcs for BK/HTB-66I-R.

Frequently Asked Questions (FAQ)

Q: Can BK/HTB-66I-R be used as a direct replacement for HTB-66I-R?

A: Yes. Both parts are manufactured by Eaton - Electronics Division and share identical electrical ratings (250V, 20A), mechanical dimensions (0.25" Dia x 1.26" L), fuse type (Cartridge), mounting configuration (Panel Mount), and termination style (Quick Connect - 0.250"). All critical substitution parameters are equivalent.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: ROHS3 Compliant represents an updated compliance standard. The BK/HTB-66I-R carries this enhanced designation. Both parts meet RoHS requirements; the difference reflects the certification version. Selection should be based on specific regulatory or procurement requirements.

Q: Are the fuse compatibility standards identical?

A: Yes. Both HTB-66I-R and BK/HTB-66I-R are compatible with 3AG, 1/4" x 1-1/4" (SFE-20) cartridge fuses. Fuse size and type specifications are identical.

Q: What is the Moisture Sensitivity Level significance?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or installation. This specification is identical across both parts.

Q: Can these fuse holders be used in applications other than panel mount?

A: No. Both parts are specifically designed for panel mount applications. The mounting type is a fixed specification and cannot be altered.

Q: What termination method do these fuse holders use?

A: Both parts use Quick Connect termination with 0.250" (6.3mm) connectors, enabling standard connection to panel-mounted circuit configurations.