HS21P-3(71) Equivalent & Substitute Parts

Part Overview

The HS21P-3(71) is a 3-position circular connector plug with female sockets manufactured by Hirose Electric Co Ltd. This connector features solder cup termination, threaded fastening, and a nickel-plated copper alloy shell rated for 10A current. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

HS21P-3(71)

Hirose Electric Co LtdIn Stock: 748HS21P-3(71) Datasheet

Current PartRFQ

TA3FLX

Switchcraft Inc.In Stock: 1801TA3FLX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HS21P-3(71) is determined by the following critical parameters:

• Connector Type & Position Count: Must be plug configuration with female sockets and 3-position contact arrangement
• Mounting Configuration: Must support free hanging in-line mounting
• Termination Method: Must accommodate solder termination for PCB integration
• Orientation: Must feature keyed design for polarized mating
• Shell Construction: Must utilize metal shell with nickel plating for corrosion resistance
• Current Capacity: Must support minimum 10A current rating for electrical compatibility

The substitute part TA3FLX meets the core functional requirements of connector type, position count, mounting style, termination method, and keyed orientation. However, differences exist in shell size designation (Mini XLR vs. 21), fastening mechanism (latch lock vs. threaded), current rating (5A vs. 10A), and additional features such as shielding and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TA3FLX from Switchcraft Inc. is an active product with current manufacturing support and RoHS3 compliance, providing supply chain continuity for the obsolete HS21P-3(71). Both connectors share fundamental compatibility in connector type, position count, mounting configuration, termination method, and keyed orientation.

Selection of TA3FLX requires evaluation of application-specific constraints. The reduced current rating of 5A versus the original 10A necessitates verification that circuit current demands do not exceed this limit. The Mini XLR shell size differs from the HS21 designation, requiring mechanical fit assessment in existing enclosures or cable assemblies. The latch lock fastening mechanism differs from the threaded design, affecting mating force and disconnection procedures. The addition of shielding in the TA3FLX provides electromagnetic interference protection not present in the original specification.

Both parts carry identical ECCN and HTSUS classifications, indicating equivalent regulatory treatment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can TA3FLX directly replace HS21P-3(71) in existing assemblies?

A: Direct mechanical replacement requires confirmation that the Mini XLR shell size accommodates existing cable strain relief and connector backshell components designed for the HS21 form factor. The latch lock fastening differs from the threaded mechanism, affecting mating procedures.

Q: What is the impact of the 5A current rating on TA3FLX compared to the 10A rating of HS21P-3(71)?

A: Applications requiring current levels between 5A and 10A cannot use TA3FLX without circuit redesign or parallel conductor configurations. Circuit current must be verified against the 5A maximum rating.

Q: Are both connectors solder-termination compatible?

A: Yes. Both HS21P-3(71) and TA3FLX utilize solder termination methods suitable for PCB integration. Solder cup and solder termination approaches are compatible with standard wave and reflow soldering processes.

Q: Does the shielding in TA3FLX affect compatibility?

A: Shielding in TA3FLX provides additional electromagnetic interference rejection. Applications not requiring shielding are unaffected. Applications requiring shielding benefit from this feature in TA3FLX.

Q: What is the availability status difference between these parts?

A: HS21P-3(71) is obsolete with limited remaining inventory (639 pcs). TA3FLX is active production with established supply (1703 pcs in stock), ensuring long-term availability for new designs and ongoing maintenance.

Q: Are there compliance or certification differences?

A: Both parts share identical ECCN (EAR99) and HTSUS (8536.69.4020) classifications. TA3FLX carries RoHS3 compliance and REACH unaffected status, providing regulatory alignment with current environmental standards.