NorComp 974-009-020-121 Equivalent & Substitute Parts

Part Overview

The NorComp 974-009-020-121 is a 9-position two-piece backshell connector with 40° cable exit angle, designed for D-Sub applications. This component features shielded construction with silver plating and is compatible with both 9-position and HD15-position D-Sub connectors. The part is currently classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new procurement requirements.

Substiute Parts

974-009-020-121

NorComp Inc.In Stock: 750974-009-020-121 Datasheet

Current PartRFQ

974-009-020R121

NorComp Inc.In Stock: 1699974-009-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 974-009-020-121 is determined by strict equivalence across the following critical parameters:

• Number of Positions: 9
• Compatible Shell Size: E
• Compatible D-Sub Size: 9pos and HD15pos
• Cable Exit Angle: 40°
• Shielding: Shielded
• Cable Type: Round
• Primary Material: Plastic
• Plating: Nickel over Copper
• Color: Silver
• Hardware: Assembly Hardware, Strain Relief
• Mating Screws: 4-40

The substitute part 974-009-020R121 maintains identical electrical and mechanical specifications across all critical parameters, with the primary distinction being product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 974-009-020R121 serves as the direct active equivalent to the obsolete 974-009-020-121. Both parts maintain identical mechanical and electrical specifications for D-Sub backshell applications. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability.

The 974-009-020R121 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements. Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99).

For new designs or system refreshes, the 974-009-020R121 is the appropriate selection. For legacy system maintenance requiring the exact original specification, the 974-009-020-121 remains functionally equivalent where RoHS compliance is not a constraint.

Frequently Asked Questions (FAQ)

Q: Are the 974-009-020-121 and 974-009-020R121 mechanically interchangeable?

A: Yes. Both parts are identical in mechanical dimensions, cable exit angle (40°), shell size (E), position count (9), and all hardware specifications. They are direct mechanical substitutes.

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

A: The primary differences are product status (obsolete versus active) and RoHS compliance. The 974-009-020R121 is ROHS3 compliant, while the 974-009-020-121 is RoHS non-compliant. Both maintain identical electrical and mechanical parameters.

Q: Can I use the 974-009-020R121 in place of the 974-009-020-121?

A: Yes, the 974-009-020R121 is a direct substitute. It maintains all critical specifications including 9-position configuration, 40° cable exit, shielded construction, and compatibility with 9pos and HD15pos D-Sub connectors.

Q: Does packaging differ between these parts?

A: Yes. The 974-009-020-121 packaging is not specified in available documentation. The 974-009-020R121 is supplied in bulk packaging.

Q: Are there RoHS compliance considerations for my application?

A: If your application requires RoHS compliance, the 974-009-020R121 (ROHS3 compliant) is the appropriate choice. The original 974-009-020-121 is RoHS non-compliant and should not be used in RoHS-regulated applications.

Q: What is the availability status of each part?

A: The 974-009-020-121 is classified as obsolete. The 974-009-020R121 is active and maintains current inventory availability.