971-009-020-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 971-009-020-121 is a 9-position two-piece backshell connector manufactured by NorComp Inc., designed for D-Sub and HD15 applications with 45° cable exit and shielded construction. This part is classified as obsolete, making identification of active equivalent components essential for ongoing system support and new design implementations. The substitute part maintains identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

971-009-020-121

NorComp Inc.In Stock: 763971-009-020-121 Datasheet

Current PartRFQ

971-009-020R121

NorComp Inc.In Stock: 1222971-009-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 971-009-020R121 qualifies as a direct equivalent based on the following critical parameters:

• Number of Positions: Both parts specify 9 positions
• Compatible Shell Size: Both support Shell Size E
• Compatible D-Sub Size: Both support 9pos and HD15pos configurations
• Cable Exit Angle: Both feature 45° cable exit
• Shielding Configuration: Both are shielded
• Cable Type: Both accommodate round cable
• Accessory Type: Both are two-piece backshell connectors
• Material Composition: Both use Plastic, Metallized construction
• Plating Specification: Both feature Nickel over Copper plating
• Hardware: Both include Assembly Hardware and Grommets
• Mating Screws: Both use 4-40 specification
• Color: Both are Silver

The primary distinction is product status: the original part is obsolete while the substitute is active, with improved RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The 971-009-020R121 is the appropriate selection for applications currently using or specifying the 971-009-020-121. This substitute maintains full electrical and mechanical compatibility while offering active product status and ROHS3 compliance certification. The transition from the obsolete part to the active equivalent eliminates supply chain risk and aligns with current regulatory requirements. Both parts share identical connector specifications, making the 971-009-020R121 a direct functional replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Are these parts mechanically interchangeable? A: Yes. Both parts feature identical shell size (E), position count (9), cable exit angle (45°), and hardware specifications (4-40 mating screws), ensuring direct mechanical compatibility in existing assemblies.

Q: What is the primary reason to transition from 971-009-020-121 to 971-009-020R121? A: The original part is classified as obsolete, while the substitute is active. The substitute also provides ROHS3 compliance, whereas the original is RoHS non-compliant.

Q: Do both parts support the same D-Sub configurations? A: Yes. Both parts are compatible with 9pos and HD15pos D-Sub sizes with Shell Size E.

Q: Is the shielding configuration identical between these parts? A: Yes. Both parts feature shielded construction with identical material composition (Plastic, Metallized) and plating (Nickel over Copper).

Q: What is the difference in packaging between these parts? A: The original part packaging is not specified, while the substitute is supplied in bulk packaging.

Q: Are there any electrical performance differences? A: No. Both parts maintain identical electrical specifications for shielded 9-position backshell applications with 45° cable exit.