970-025-020-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 970-025-020-121 is a 25-position two-piece backshell connector manufactured by NorComp Inc., designed for D-Sub applications with 180° cable exit and shielded configuration. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain supply chain continuity for ongoing production and field service requirements.

Substiute Parts

970-025-020-121

NorComp Inc.In Stock: 1094970-025-020-121 Datasheet

Current PartRFQ

970-025-020R121

NorComp Inc.In Stock: 1189970-025-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 970-025-020-121 is determined by strict equivalence across the following critical parameters:

• Number of Positions: 25
• Compatible Shell Size: B
• Compatible D-Sub Size: 25pos and HD44pos
• Cable Exit Angle: 180°
• Shielding Configuration: Shielded
• Accessory Type: Two Piece Backshell
• Material Composition: Plastic, Metallized
• Plating Specification: Nickel over Copper
• Hardware Configuration: Assembly Hardware, Grommets; Mating Screws 4-40
• Color: Silver

The substitute part 970-025-020R121 maintains full electrical and mechanical compatibility with the original specification while offering active product status and improved regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 970-025-020R121 serves as the direct active equivalent to the obsolete 970-025-020-121. Selection of the substitute part is based on:

• Full mechanical and electrical parameter equivalence across all critical specifications
• Active product status ensuring ongoing availability and supply chain support
• ROHS3 compliance, providing regulatory advantage over the non-compliant original part
• Identical connector geometry, pin configuration, and mating interface
• Maintained compatibility with existing 25-position D-Sub assemblies and HD44pos configurations

The substitute part is suitable for direct replacement in new designs and field service applications without modification to existing connector interfaces or assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the 970-025-020R121 be used as a direct replacement for the 970-025-020-121?

A: Yes. The 970-025-020R121 maintains identical electrical and mechanical specifications across all critical parameters including pin count, shell size, cable exit angle, shielding configuration, material composition, and hardware specifications.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and regulatory compliance. The 970-025-020-121 is obsolete and RoHS non-compliant, while the 970-025-020R121 is active and ROHS3 compliant. Both parts are functionally equivalent for D-Sub backshell applications.

Q: Are there packaging differences between these parts?

A: The original part number does not specify packaging detail, while the substitute is supplied in bulk packaging. This does not affect functional compatibility or performance.

Q: Is the 970-025-020R121 compatible with existing 25-position D-Sub connector assemblies?

A: Yes. The substitute part maintains full compatibility with 25-position D-Sub connectors and HD44pos configurations due to identical shell size (B), cable exit angle (180°), and all mechanical interface specifications.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in number of positions (25), compatible shell size (B), cable exit angle (180°), shielding configuration (shielded), accessory type (two piece backshell), material composition (plastic, metallized), plating (nickel over copper), and hardware specifications (4-40 mating screws).