TE Connectivity 205718-1 D-Sub 25 Position Hinged Backshell Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 205718-1 is a 25 position hinged backshell connector from the AMPLIMITE HD-20 series, designed for D-Sub applications with 45° and 180° cable exit angles. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing procurement and system integration. The part features unshielded construction with thermoplastic housing and black coloring, compatible with 25-position and HD44-position D-Sub connectors using round cable types.

Substiute Parts

205718-1

TE Connectivity AMP ConnectorsIn Stock: 823205718-1 Datasheet

Current PartRFQ

5205718-1

TE Connectivity AMP ConnectorsIn Stock: 23255205718-1 Datasheet

DirectRFQ

973-025-010R011

NorComp Inc.In Stock: 1613973-025-010R011 Datasheet

SimilarRFQ

974-025-010R011

NorComp Inc.In Stock: 1503974-025-010R011 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 205718-1 is determined by the following critical parameters: 25-position connector count, compatibility with Shell Size B and 25-position D-Sub connectors, unshielded construction, black color, round cable type, and support for the required cable exit angles (45° and/or 180°).

The substitute parts are grouped into two categories:

Direct Equivalent: Parts that maintain identical functional specifications and form factors, differing only in packaging or material composition while preserving electrical and mechanical compatibility.

Similar Substitutes: Parts that share core compatibility parameters (25 positions, Shell Size B, D-Sub compatibility, unshielded, black, round cable) but differ in cable exit angle configuration or backshell construction type (two-piece versus hinged design).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The TE Connectivity 5205718-1 serves as the direct active equivalent to the obsolete 205718-1. Both parts maintain identical 25-position configuration, Shell Size B compatibility, 45° and 180° cable exit angles, hinged backshell design, and unshielded construction. The 5205718-1 is currently in active production status with ROHS3 compliance, addressing regulatory requirements that the original part does not meet. Material composition differs (polypropylene versus thermoplastic), but both are plastic-based with equivalent mechanical properties for this application. The 5205718-1 is the recommended primary substitute.

For Angle-Specific Applications: When cable exit angle requirements differ from the original specification, NorComp alternatives provide viable substitution paths. The 973-025-010R011 accommodates 180° cable exit requirements with two-piece backshell construction and ROHS3 compliance. The 974-025-010R011 supports 40° cable exit angles, suitable for applications where the original 45° angle is not critical. Both NorComp parts employ ABS material composition and include strain relief features. Hardware specifications differ (4-40 mating screws versus 6-32), requiring mechanical compatibility verification in the target assembly.

Compliance Considerations: All substitute parts achieve ROHS3 compliance, addressing environmental and regulatory requirements absent in the obsolete 205718-1. Selection should prioritize the 5205718-1 for direct functional equivalence when cable exit angle requirements are fixed at 45° or 180°.

Frequently Asked Questions (FAQ)

Q: Can the 5205718-1 directly replace the 205718-1 without design modifications?

A: Yes. The 5205718-1 maintains identical electrical and mechanical specifications including 25-position count, Shell Size B compatibility, 45° and 180° cable exit angles, hinged backshell design, and unshielded construction. Both parts are compatible with 25-position and HD44-position D-Sub connectors using round cable. Material composition differs (polypropylene versus thermoplastic), but both provide equivalent performance for plastic backshell applications.

Q: What are the key differences between the TE Connectivity 5205718-1 and the NorComp alternatives?

A: The 5205718-1 maintains the hinged backshell design and dual cable exit angle capability (45°, 180°) of the original part. NorComp parts (973-025-010R011 and 974-025-010R011) employ two-piece backshell construction with single cable exit angles (180° and 40° respectively). All three substitute parts share 25-position configuration, Shell Size B compatibility, unshielded design, and black coloring. Hardware specifications differ: the 5205718-1 uses assembly hardware with strain relief, while NorComp parts specify 4-40 mating screws.

Q: Are there compatibility concerns with mating screw specifications?

A: The original 205718-1 specifies 6-32 mating screws. The 5205718-1 direct equivalent does not specify mating screw size in the provided data. NorComp alternatives specify 4-40 mating screws. Mechanical compatibility with existing D-Sub connector hardware must be verified during integration, as screw size differences may require adapter hardware or connector redesign.

Q: Which substitute part should be selected for new designs?

A: The TE Connectivity 5205718-1 is the recommended primary selection for new designs requiring 25-position hinged backshell connectors with 45° and 180° cable exit angles. It provides direct functional equivalence to the obsolete 205718-1 while achieving ROHS3 compliance. NorComp alternatives are suitable only when cable exit angle requirements differ from the original specification or when two-piece backshell construction is acceptable.

Q: What is the impact of RoHS compliance differences?

A: The original 205718-1 is RoHS non-compliant. All substitute parts (5205718-1, 973-025-010R011, 974-025-010R011) achieve ROHS3 compliance. For applications subject to RoHS regulations or customer requirements, substitution with any of the listed parts addresses compliance gaps. For legacy systems without RoHS mandates, compliance status does not affect functional performance.

Q: Can the NorComp 973-025-010R011 or 974-025-010R011 be used if only one cable exit angle is required?

A: Yes, if the application requires only 180° cable exit, the 973-025-010R011 provides a compatible substitute. If 40° cable exit is acceptable, the 974-025-010R011 is suitable. However, if the original design requires both 45° and 180° angle capability, only the 5205718-1 maintains this dual-angle functionality. Two-piece backshell construction in NorComp parts differs mechanically from the hinged design, potentially affecting assembly procedures and cable strain relief characteristics.

Q: What inventory considerations apply to these substitute parts?

A: The original 205718-1 has 813 pieces in stock. The 5205718-1 direct equivalent has 2261 pieces available. NorComp alternatives have 1526 pieces (973-025-010R011) and 1484 pieces (974-025-010R011) in stock. All parts are available in bulk packaging. Procurement decisions should account for production volume requirements and supply chain lead times.