TE Connectivity AMP Connectors 745173-3 D-Sub Backshell Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 745173-3 is a 25 Position Two Piece Backshell Connector with 180° cable exit and shielding, designed for D-Sub connector assemblies. This component functions as a protective and strain relief accessory for 25-position D-Sub connectors in the AMPLIMITE series.

The 745173-3 carries an Obsolete product status, indicating discontinuation from the manufacturer. Identification of equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or field replacement requirements for systems utilizing this backshell connector.

Substiute Parts

745173-3

TE Connectivity AMP ConnectorsIn Stock: 1180745173-3 Datasheet

Current PartRFQ

5745173-3

TE Connectivity AMP ConnectorsIn Stock: 13275745173-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 745173-3 is determined by strict equivalence across all critical mechanical and electrical parameters. The following parameters must match identically for a part to function as a direct substitute:

• Accessory Type: Two Piece Backshell configuration
• Number of Positions: 25
• Compatible Shell Size: B
• Compatible D-Sub Size: 25pos and HD44pos
• Cable Exit Angle: 180°
• Shielding: Shielded
• Cable Type: Round
• Primary Material: Metal, Zinc Alloy
• Plating: Nickel over Copper
• Hardware: Mating Screws 4-40
• Color: Silver

Parts meeting all these criteria are classified as direct functional equivalents and may be substituted without modification to connector assembly specifications or mechanical interfaces.

Parameter Comparison

Engineering Selection Recommendations

The 5745173-3 is a direct functional equivalent to the obsolete 745173-3 based on complete parameter alignment across all mechanical and electrical specifications. Both parts are manufactured by TE Connectivity AMP Connectors and belong to the AMPLIMITE series.

The primary distinction between these parts is product lifecycle status and regulatory compliance:

• The 745173-3 is classified as Obsolete with RoHS non-compliant status and undefined REACH compliance.
• The 5745173-3 is classified as Active with ROHS3 Compliant status and REACH Unaffected designation.

For new designs, production continuity, or field replacements where regulatory compliance is required, the 5745173-3 is the appropriate selection. The 5745173-3 maintains full mechanical and electrical compatibility with the 745173-3 while providing current product status and enhanced regulatory compliance.

Both parts carry identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Frequently Asked Questions (FAQ)

Q: Can the 5745173-3 be used as a direct replacement for the 745173-3 in existing assemblies?

A: Yes. The 5745173-3 is mechanically and electrically identical to the 745173-3. All connector interface dimensions, cable exit angles, shielding characteristics, and hardware specifications are equivalent. Direct substitution is supported without modification to connector assembly specifications.

Q: What is the difference between the 745173-3 and 5745173-3?

A: The parts are functionally identical. The primary differences are product status (Obsolete versus Active) and regulatory compliance. The 5745173-3 is ROHS3 Compliant and REACH Unaffected, while the 745173-3 is RoHS non-compliant with undefined REACH status.

Q: Are there packaging differences between these parts?

A: The 745173-3 packaging is not specified in the available data. The 5745173-3 is supplied in Bulk packaging. Packaging configuration should be confirmed with the supplier based on specific procurement requirements.

Q: What connector types are compatible with these backshells?

A: Both the 745173-3 and 5745173-3 are compatible with 25-position D-Sub connectors and HD44-position D-Sub connectors using Shell Size B. The 180° cable exit angle accommodates straight-angle cable routing from the connector assembly.

Q: Are these parts suitable for shielded applications?

A: Yes. Both parts feature shielding and are designed for applications requiring electromagnetic interference (EMI) protection. The shielded backshell design integrates with shielded D-Sub connector shells.

Q: What is the cable type compatibility?

A: Both parts are designed for round cable types. The two-piece backshell design accommodates round cable assemblies with the specified 180° cable exit angle.