TE Connectivity AMP Connectors 749854-1 D-Sub Backshell Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 749854-1 is a 100 Position Two Piece Backshell Connector with 180° cable exit, designed for shielded D-Sub applications within the AMPLIMITE .050 III series. This component functions as a protective and strain relief accessory for D-Sub connector assemblies, providing electromagnetic shielding and mechanical support for round cable configurations.

The 749854-1 carries an Obsolete product status, indicating discontinuation from the manufacturer. Identification of functionally equivalent substitute parts is necessary to maintain design compatibility and ensure continued component availability for production, repair, and field service applications.

Substiute Parts

749854-1

TE Connectivity AMP ConnectorsIn Stock: 788749854-1 Datasheet

Current PartRFQ

5749854-1

TE Connectivity AMP ConnectorsIn Stock: 8895749854-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 749854-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Number of Positions: 100
• Accessory Type: Two Piece Backshell
• Cable Exit Angle: 180°
• Shielding: Shielded
• Cable Type: Round
• Series: AMPLIMITE .050 III
• Material Composition: Metal, Zinc
• Plating: Nickel over Copper
• Mating Features: Mating Screws 2-56

The substitute part 5749854-1 maintains identical electrical and mechanical specifications across all critical parameters. The primary distinction between the main part and its substitute is product status and regulatory compliance posture, with the substitute part carrying Active status and RoHS3 compliance certification.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production: The substitute part 5749854-1 is the appropriate selection for new applications. This part maintains full functional and mechanical equivalence to the 749854-1 while offering Active product status and RoHS3 compliance certification. The Active status ensures continued manufacturer support, availability, and supply chain stability. RoHS3 compliance satisfies regulatory requirements for products destined for markets with environmental substance restrictions.

For Legacy System Maintenance: The 749854-1 remains functionally suitable for repair and field service of existing assemblies where the original part specification is required. However, transition to 5749854-1 is supported by identical electrical and mechanical parameters, enabling direct substitution without design modification.

Compliance Considerations: Organizations subject to RoHS regulations or environmental compliance mandates must specify 5749854-1 to satisfy regulatory obligations. The substitute part's RoHS3 compliance status provides assurance of conformance to applicable environmental directives.

Frequently Asked Questions (FAQ)

Q: Can 5749854-1 be used as a direct replacement for 749854-1 in existing assemblies?

A: Yes. The 5749854-1 maintains identical specifications across all critical electrical and mechanical parameters, including position count, cable exit angle, shielding configuration, material composition, plating, and mating hardware. Direct substitution is supported without design modification or re-qualification.

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

A: The 749854-1 is Obsolete and RoHS non-compliant, while the 5749854-1 is Active and RoHS3 compliant. Both parts are functionally and mechanically equivalent. The substitute part offers improved regulatory compliance and manufacturer support.

Q: Does packaging differ between these parts?

A: Yes. The 749854-1 packaging is not specified in available documentation. The 5749854-1 is supplied in Bag packaging. This difference does not affect functional compatibility or performance.

Q: Are there any electrical performance differences?

A: No. Both parts are identical in electrical characteristics, shielding effectiveness, and impedance properties. They are designed for the same D-Sub connector applications within the AMPLIMITE .050 III series.

Q: Which part should be specified for new designs?

A: The 5749854-1 should be specified for new designs. This part carries Active status, ensuring continued availability and manufacturer support. RoHS3 compliance also satisfies environmental regulatory requirements for most markets.

Q: Is the 749854-1 still available for purchase?

A: The 749854-1 is listed as Obsolete. While inventory may exist through authorized distributors, the 5749854-1 is the recommended source for ongoing procurement due to its Active status and superior supply chain availability.

Q: Do these parts require different assembly procedures?

A: No. Both parts are identical in assembly requirements, mating screw specifications (2-56), strain relief configuration, and mechanical installation procedures.

Q: What is the moisture sensitivity level for these backshells?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.