TE Connectivity AMP Connectors 794138-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 794138-3 is a rectangular connector socket contact designed for 18-22 AWG wire gauges with gold plating and crimp termination. This component is classified as obsolete, indicating it is no longer in active production. The identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing manufacturing or repair operations where this connector type is specified.

Substiute Parts

794138-3

TE Connectivity AMP ConnectorsIn Stock: 862794138-3 Datasheet

Current PartRFQ

794956-3

TE Connectivity AMP ConnectorsIn Stock: 28452794956-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 794138-3 is based on the following critical parameters that must remain consistent across equivalent parts:

• Wire Gauge Compatibility: 18-22 AWG (required match)
• Contact Termination Type: Crimp (required match)
• Socket Configuration: Socket contact (required match)
• Connector Category: Rectangular Connectors (required match)
• Moisture Sensitivity Level: MSL 1 (Unlimited) (required match)

The substitute part 794956-3 maintains all critical functional parameters required for direct substitution. The primary differences between the main part and substitute are the contact finish material (gold versus tin) and the product status (obsolete versus active). These differences do not affect the core electrical or mechanical compatibility for applications where the connector type and wire gauge specifications are the determining factors.

Parameter Comparison

Engineering Selection Recommendations

The 794956-3 serves as a functional substitute for the obsolete 794138-3 based on matching electrical and mechanical specifications. Both parts share identical wire gauge ratings (18-22 AWG), crimp termination methodology, socket configuration, and moisture sensitivity classification.

The 794956-3 offers the advantage of active product status, ensuring continued availability and supply chain support. Additionally, the 794956-3 is RoHS compliant, whereas the 794138-3 is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements.

The contact finish difference (gold on 794138-3 versus tin on 794956-3) represents a material change that may affect contact resistance and corrosion characteristics in specific environmental conditions. Both finishes are suitable for general rectangular connector applications within the specified wire gauge range.

Frequently Asked Questions (FAQ)

Q: Can the 794956-3 be used as a direct replacement for the 794138-3?

A: The 794956-3 is functionally compatible with the 794138-3 for applications requiring 18-22 AWG socket contacts with crimp termination. Both parts maintain identical wire gauge specifications, termination type, and moisture sensitivity ratings. The primary differences are contact finish material and product status.

Q: What is the significance of the contact finish difference between gold and tin?

A: Contact finish affects electrical properties such as contact resistance and environmental corrosion resistance. Gold provides superior corrosion resistance and lower contact resistance, while tin is a cost-effective alternative suitable for general applications. The selection between these finishes depends on specific application requirements and environmental exposure conditions.

Q: Why is the 794138-3 listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by TE Connectivity AMP Connectors. The 794956-3 represents an active alternative that fulfills the same functional requirements.

Q: Does the RoHS compliance difference affect substitution?

A: RoHS compliance is a regulatory consideration rather than a functional compatibility factor. If the application or end-use market requires RoHS compliance, the 794956-3 is the appropriate selection. If RoHS compliance is not a requirement, both parts are functionally equivalent.

Q: Are there packaging differences between these parts?

A: The 794138-3 packaging information is not specified in the available data. The 794956-3 is supplied in Cut Tape (CT) packaging. Packaging format should be confirmed based on specific procurement and assembly requirements.

Q: What is the inventory status for these parts?

A: The 794138-3 has 762 pieces available as new original stock. The 794956-3 has 28,372 pieces available as new original stock, indicating significantly higher availability for the active substitute part.