TE Connectivity AMP Connectors 794139-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 794139-3 is an active rectangular connector socket contact designed for power applications. This component features gold plating and crimp termination suitable for 22-26 AWG wire gauges. The part is currently in active production status with 1,147 pieces available in new original inventory.

Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when design flexibility permits component interchange based on compatible electrical and mechanical parameters.

Substiute Parts

794139-3

TE Connectivity AMP ConnectorsIn Stock: 1246794139-3 Datasheet

Current PartRFQ

SWPJR-21T-M0.5A

JST Sales America Inc.In Stock: 23186SWPJR-21T-M0.5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 794139-3 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Socket contact configuration (Pin or Socket designation)
• Crimp termination method
• Wire gauge range accommodation
• Rectangular connector category classification

The substitute part SWPJR-21T-M0.5A from JST Sales America Inc. shares the socket contact configuration and crimp termination method. However, the wire gauge range differs: the substitute accommodates 18-22 AWG compared to the main part's 22-26 AWG specification. This represents a partial overlap in the 22 AWG range, with the substitute providing coverage for smaller gauge wires (18-20 AWG) while the main part extends to larger gauges (24-26 AWG).

Contact finish differs between the parts: the main part features gold plating at 30.0µin thickness, while the substitute uses tin plating. This distinction affects corrosion resistance and electrical properties in specific application environments.

Parameter Comparison

Engineering Selection Recommendations

Main Part (794139-3) Selection Criteria:

• Applications requiring gold-plated contacts for enhanced corrosion resistance
• Wire gauge specifications in the 24-26 AWG range
• Systems where RoHS non-compliance is acceptable
• Power connector applications within the AMP-DUAC series ecosystem

Substitute Part (SWPJR-21T-M0.5A) Selection Criteria:

• Applications accommodating tin-plated contacts
• Wire gauge specifications in the 18-20 AWG range
• Systems requiring ROHS3 compliance
• JST WPJ series connector compatibility
• REACH unaffected material composition requirements

Both parts maintain identical Moisture Sensitivity Level (MSL) classification and export control coding (ECCN EAR99), indicating equivalent handling and regulatory treatment in these categories.

Frequently Asked Questions (FAQ)

Q: Can SWPJR-21T-M0.5A directly replace 794139-3 in all applications?

A: Direct replacement is limited by wire gauge range differences. The substitute accommodates 18-22 AWG, while the main part covers 22-26 AWG. Applications using 22 AWG wire fall within both ranges. Applications requiring 24-26 AWG wire cannot use the substitute. Contact finish differences (gold versus tin) also affect suitability based on environmental corrosion requirements.

Q: What is the significance of the contact finish difference?

A: The main part features gold plating at 30.0µin (0.76µm) thickness, providing superior corrosion resistance and lower contact resistance. The substitute uses tin plating, which offers adequate performance in many applications but differs in oxidation resistance and electrical properties. Selection depends on environmental exposure and electrical performance requirements.

Q: Are there packaging differences between these parts?

A: The main part packaging is not specified in available data. The substitute part (SWPJR-21T-M0.5A) is supplied in Cut Tape (CT) packaging format.

Q: What compliance differences exist between these parts?

A: The main part is RoHS non-compliant, while the substitute is ROHS3 compliant. The substitute is REACH unaffected, whereas the main part has undefined REACH status. These differences are significant for applications subject to European Union regulatory requirements.

Q: Are both parts suitable for power applications?

A: The main part is explicitly designated for power applications. The substitute part type designation is not specified in available data. Wire gauge and crimp termination capabilities support power distribution in both cases, but application-specific power requirements must be evaluated independently.

Q: What is the inventory status for each part?

A: The main part (794139-3) has 1,147 pieces in new original stock. The substitute part (SWPJR-21T-M0.5A) has 23,077 pieces in new original stock, indicating significantly higher availability.