NorComp 979-050-030-121 D-Sub Backshell Connector: Equivalent & Substitute Parts

Part Overview

The NorComp 979-050-030-121 is a 50-position two-piece D-Sub backshell connector with 180° cable exit and shielding. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The connector accommodates both 50-position and HD78-position D-Sub shells with round cable configurations and nickel-plated metal construction.

Substiute Parts

979-050-030-121

NorComp Inc.In Stock: 1076979-050-030-121 Datasheet

Current PartRFQ

979-050-030R121

NorComp Inc.In Stock: 872979-050-030R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 979-050-030R121 qualifies as a direct equivalent based on the following critical parameters:

• Number of Positions: 50 (identical)
• Compatible Shell Size: D (identical)
• Compatible D-Sub Size: 50pos and HD78pos (identical)
• Cable Exit Angle: 180° (identical)
• Shielding Configuration: Shielded (identical)
• Material Composition: Metal, Zinc Alloy (identical)
• Plating Specification: Nickel (identical)
• Hardware Configuration: Assembly Hardware, Grommets; Mating Screws 4-40 (identical)
• Color: Silver (identical)

The substitute part maintains full mechanical and electrical compatibility with the original specification while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 979-050-030R121 is the appropriate selection for applications currently using the obsolete 979-050-030-121. The substitute maintains identical mechanical and electrical specifications while offering the following advantages:

• Active Product Status: The substitute is currently in active production, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: The substitute achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This compliance status is relevant for applications subject to RoHS regulations.
• Inventory Availability: The substitute part maintains adequate stock levels (789 Pcs New Original In Stock) for procurement.

No functional or mechanical modifications are required when transitioning from the original to the substitute part.

Frequently Asked Questions (FAQ)

Q: Are the 979-050-030-121 and 979-050-030R121 mechanically interchangeable?

A: Yes. Both parts share identical specifications for number of positions (50), shell size (D), compatible D-Sub sizes (50pos and HD78pos), cable exit angle (180°), shielding configuration, material composition, plating, and hardware configuration.

Q: What is the primary reason to transition from the original to the substitute part?

A: The original part 979-050-030-121 is classified as obsolete. The substitute 979-050-030R121 is an active product with current manufacturing support and improved regulatory compliance (ROHS3).

Q: Does the substitute part require any design modifications?

A: No. The substitute part maintains full compatibility with existing designs. No modifications to PCB layouts, cable assemblies, or mechanical mounting are necessary.

Q: What is the difference in packaging between the two parts?

A: The original part packaging is not specified. The substitute part is supplied in bulk packaging.

Q: Are there any compliance differences between the two parts?

A: Yes. The substitute part is ROHS3 compliant, while the original part is RoHS non-compliant. Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Q: Can the substitute part be used in new designs?

A: Yes. The substitute part is the recommended choice for new designs requiring a 50-position D-Sub backshell connector with 180° cable exit and shielding, as it offers active product status and regulatory compliance.