TE Connectivity AMP Connectors 174921-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 174921-3 is a 3-position rectangular connector housing plug with a 0.138" (3.50mm) pitch, designed for free-hanging in-line mounting applications. This connector utilizes crimp contact termination and latch holder fastening within the Multi-Lock series. The 174921-3 is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

174921-3

TE Connectivity AMP ConnectorsIn Stock: 822174921-3 Datasheet

Current PartRFQ

174921-2

TE Connectivity AMP ConnectorsIn Stock: 1862174921-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 174921-3 is determined by strict equivalence across the following critical parameters:

• Connector Type & Series: Plug configuration within the Multi-Lock series
• Contact Configuration: Female socket contacts with 3-position arrangement
• Pitch Specification: 0.138" (3.50mm) center-to-center spacing
• Mounting Architecture: Free-hanging in-line orientation
• Termination Method: Crimp-style contact attachment
• Fastening Mechanism: Latch holder retention system

The substitute part 174921-2 maintains identical electrical and mechanical specifications across all these parameters, ensuring direct functional equivalence. The primary distinction is product status: 174921-2 is active and available, whereas 174921-3 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The 174921-2 serves as the direct active equivalent for the obsolete 174921-3. Both components share identical connector architecture, contact configuration, pitch specification, and mounting characteristics. The 174921-2 is classified as active with current production status and full inventory availability (1821 pieces in stock).

From a compliance perspective, the 174921-2 provides enhanced documentation: ROHS3 compliance certification, defined operating temperature range (-30°C ~ 105°C), and REACH unaffected status. The substitute part utilizes Polybutylene Terephthalate (PBT) insulation material with MSL rating of 1 (unlimited moisture sensitivity protection).

Both components carry identical ECCN (EAR99) and HTSUS (8538.90.6000) classifications, confirming regulatory equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can 174921-2 directly replace 174921-3 in existing designs?

A: Yes. The 174921-2 maintains identical specifications across all critical parameters: 3-position configuration, 0.138" (3.50mm) pitch, female socket contacts, crimp termination, latch holder fastening, and free-hanging in-line mounting. No design modification is required.

Q: What is the primary difference between these two parts?

A: The 174921-3 is obsolete with undefined compliance documentation, while the 174921-2 is an active production component with ROHS3 compliance, specified operating temperature range, and REACH unaffected status. The 174921-2 also specifies PBT insulation material.

Q: Are there packaging differences between 174921-3 and 174921-2?

A: The 174921-3 packaging specification is not provided in available documentation. The 174921-2 is supplied in bulk packaging. Confirm packaging requirements with your procurement specification.

Q: Do these connectors include contacts?

A: No. Both the 174921-3 and 174921-2 are connector housings only. Contacts must be sourced separately and installed via crimp termination.

Q: What is the inventory status for these parts?

A: The 174921-3 (obsolete) has 780 pieces available. The 174921-2 (active) has 1821 pieces in stock. For new designs and ongoing production, source the 174921-2.

Q: Are the electrical and mechanical specifications identical?

A: Yes. Both parts are functionally equivalent across all electrical and mechanical parameters: connector type, contact type, position count, pitch, row configuration, mounting type, termination method, and fastening mechanism.