983-050-020-121 Equivalent & Substitute Parts

Part Overview

The 983-050-020-121 is a 50 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, which necessitates identification of active equivalent parts to maintain supply chain continuity and ensure long-term component availability for new designs and field replacements.

Substiute Parts

983-050-020-121

NorComp Inc.In Stock: 950983-050-020-121 Datasheet

Current PartRFQ

983-050-020R121

NorComp Inc.In Stock: 860983-050-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 983-050-020-121 is determined by strict equivalence across the following critical parameters:

• Number of Positions: 50
• Compatible Shell Size: D
• Compatible D-Sub Size: 50pos and HD78pos
• Cable Exit Angle: 180°
• Shielding Configuration: Shielded
• Accessory Type: Two Piece Backshell
• Cable Type: Round
• Plating Specification: Nickel over Copper
• Hardware: Strain Relief with 4-40 Mating Screws
• Color: Silver

The substitute part 983-050-020R121 maintains identical electrical and mechanical specifications across all parameters listed above. The primary distinction is product status: the substitute transitions from obsolete to active classification, ensuring continued manufacturing support and supply availability.

Parameter Comparison

Engineering Selection Recommendations

The 983-050-020R121 is the direct equivalent substitute for the obsolete 983-050-020-121. Both parts are manufactured by NorComp Inc. and maintain identical mechanical and electrical specifications for D-Sub backshell applications.

The substitute part offers the following advantages:

• Active product status ensures ongoing manufacturing and supply chain availability
• ROHS3 compliance provides regulatory alignment for new designs and applications subject to RoHS requirements
• Identical form, fit, and function across all mechanical and electrical parameters

Both parts maintain equivalent REACH and ECCN classifications. Selection between these parts should be based on regulatory requirements and supply availability, with the active substitute recommended for new designs and long-term applications.

Frequently Asked Questions (FAQ)

Q: Are 983-050-020-121 and 983-050-020R121 mechanically interchangeable?

A: Yes. Both parts are 50 position two piece backshells with identical shell size (D), cable exit angle (180°), shielding configuration, plating specification, and hardware. They are direct mechanical equivalents.

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

A: The primary differences are product status and RoHS compliance. The 983-050-020-121 is obsolete and RoHS non-compliant, while the 983-050-020R121 is active and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Can I use 983-050-020R121 as a replacement for 983-050-020-121 in existing designs?

A: Yes. The substitute part maintains identical specifications across all critical parameters including connector position count, shell size, cable exit angle, shielding, plating, and hardware configuration.

Q: Does the packaging differ between these parts?

A: The 983-050-020-121 packaging is not specified in available data. The 983-050-020R121 is supplied in bulk packaging.

Q: Are there any compliance differences I should consider?

A: The 983-050-020R121 is ROHS3 compliant, while the 983-050-020-121 is RoHS non-compliant. Both maintain equivalent REACH and ECCN classifications. For applications subject to RoHS requirements, the substitute part is the appropriate selection.