NorComp 982-050-020-121 D-Sub Backshell Connector: Equivalent & Substitute Parts

Part Overview

The NorComp 982-050-020-121 is a 50-position two-piece D-Sub backshell connector with shielded construction, designed for round cable applications with 90° and 180° cable exit options. This connector features nickel-plated copper contacts over plastic and metallized housing, with assembly hardware and strain relief integrated into the design.

The 982-050-020-121 is classified as obsolete. Locating equivalent or substitute components is necessary to maintain system compatibility and ensure continued availability for new production builds and field replacements.

Substiute Parts

982-050-020-121

NorComp Inc.In Stock: 912982-050-020-121 Datasheet

Current PartRFQ

982-050-020R121

NorComp Inc.In Stock: 1983982-050-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 982-050-020-121 is determined by strict equivalence across the following critical parameters:

• Position Count: 50 positions (mandatory match)
• Shell Size: D-shell (mandatory match)
• Compatible D-Sub Sizes: 50pos and HD78pos (mandatory match)
• Accessory Type: Two-piece backshell (mandatory match)
• Cable Type: Round cable (mandatory match)
• Cable Exit Angles: 90° and 180° (mandatory match)
• Shielding: Shielded construction (mandatory match)
• Material Composition: Plastic with metallized finish (mandatory match)
• Plating Specification: Nickel over copper (mandatory match)
• Hardware Integration: Assembly hardware and strain relief (mandatory match)
• Mating Screw Size: 4-40 (mandatory match)

The substitute part 982-050-020R121 meets all mandatory equivalence criteria and is therefore a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The 982-050-020R121 is the direct active substitute for the obsolete 982-050-020-121. Both components are manufactured by NorComp Inc. and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The 982-050-020-121 is obsolete and RoHS non-compliant, while the 982-050-020R121 is active and ROHS3 compliant. For new designs and production builds subject to RoHS3 requirements, the 982-050-020R121 is the appropriate selection. For legacy system maintenance where RoHS compliance is not mandated, either part may be used interchangeably based on availability and procurement constraints.

Both components carry identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring equivalent regulatory treatment in export and supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Can the 982-050-020R121 be used as a direct replacement for the 982-050-020-121?

A: Yes. The 982-050-020R121 is a direct functional substitute. All electrical and mechanical parameters are identical, including position count, shell size, cable exit angles, shielding, material composition, plating, and hardware specifications.

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

A: The 982-050-020-121 is obsolete and RoHS non-compliant, while the 982-050-020R121 is active production and ROHS3 compliant. Functionally, they are equivalent.

Q: Are there packaging differences between these parts?

A: The 982-050-020R121 is supplied in bag packaging. The original packaging specification for the 982-050-020-121 is not documented in available data.

Q: Do both parts support 90° and 180° cable exit configurations?

A: Yes. Both the 982-050-020-121 and 982-050-020R121 support dual cable exit angles of 90° and 180°.

Q: Are these connectors compatible with both 50-position and HD78-position D-Sub applications?

A: Yes. Both parts are compatible with 50pos and HD78pos D-Sub sizes within the D-shell form factor.

Q: What is the mating screw specification for these backshells?

A: Both parts use 4-40 mating screws for assembly and connection.