979-009-030-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 979-009-030-121 is a 9-position two-piece backshell connector manufactured by NorComp Inc., designed for D-Sub and HD15 position applications with 180° cable exit orientation. 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

979-009-030-121

NorComp Inc.In Stock: 686979-009-030-121 Datasheet

Current PartRFQ

979-009-030R121

NorComp Inc.In Stock: 15825979-009-030R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 979-009-030-121 is determined by the following critical parameters that must remain constant:

• Number of Positions: 9
• Compatible Shell Size: E
• Compatible D-Sub Size: 9pos and HD15pos
• Cable Exit Angle: 180°
• Shielding: Shielded
• Material Composition: Metal, Zinc Alloy
• Plating: Nickel
• Mating Hardware: Mating Screws 4-40
• Color: Silver

The identified substitute part maintains all electrical and mechanical specifications required for direct functional replacement. The primary distinction between the main part and its substitute is product status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

The 979-009-030R121 serves as the direct active equivalent to the obsolete 979-009-030-121. Both parts maintain identical electrical and mechanical specifications across all critical parameters including position count, shell size compatibility, cable exit orientation, shielding configuration, and material composition.

The 979-009-030R121 offers the following advantages for new designs and ongoing production:

• Active product status ensures continued manufacturer support and availability
• ROHS3 compliance satisfies current environmental and regulatory requirements
• Significantly higher inventory availability (15,802 units versus 651 units)
• Defined MSL rating of 1 (Unlimited) provides clear handling and storage specifications

For applications where RoHS non-compliance is not a constraint, the 979-009-030-121 remains functionally equivalent. However, for new designs or applications subject to RoHS requirements, the 979-009-030R121 is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the 979-009-030R121 directly replace the 979-009-030-121 in existing assemblies?

A: Yes. Both parts maintain identical specifications for number of positions, shell size, D-Sub compatibility, cable exit angle, shielding, material, plating, and mating hardware. Direct mechanical and electrical substitution is supported.

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

A: The primary differences are product status (obsolete versus active), RoHS compliance level (non-compliant versus ROHS3 compliant), and inventory availability. All functional specifications remain identical.

Q: Does the packaging difference affect compatibility?

A: No. The packaging difference (unspecified for 979-009-030-121 versus bulk for 979-009-030R121) does not affect the connector's electrical or mechanical performance. Packaging is a supply chain consideration only.

Q: Are there any restrictions on using the 979-009-030R121 in place of the 979-009-030-121?

A: No restrictions exist based on the provided specifications. Both parts are manufactured by NorComp Inc. and maintain identical functional parameters.

Q: What does MSL 1 (Unlimited) mean for the 979-009-030R121?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions and does not require special handling, storage, or baking procedures prior to assembly.