NorComp 973-015-020-121 D-Sub Backshell Connector: Equivalent & Substitute Parts

Part Overview

The NorComp 973-015-020-121 is a 15-position two-piece backshell connector with 180° cable exit, designed for D-Sub and HD26-position applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and procurement planning. The backshell provides shielding and strain relief functionality in D-Sub connector assemblies, with nickel-plated copper contacts and plastic construction.

Substiute Parts

973-015-020-121

NorComp Inc.In Stock: 871973-015-020-121 Datasheet

Current PartRFQ

973-015-020R121

NorComp Inc.In Stock: 4316973-015-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 973-015-020-121 is determined by the following critical parameters:

• Number of Positions: Must be 15
• Compatible Shell Size: Must be A
• Compatible D-Sub Size: Must support 15pos and HD26pos
• Cable Exit Angle: Must be 180°
• Shielding: Must be Shielded
• Accessory Type: Must be Two Piece Backshell
• Cable Type: Must be Round
• Plating: Must be Nickel over Copper
• Hardware: Must include Assembly Hardware and Strain Relief
• Mating Feature: Must use Mating Screws 4-40

The substitute part 973-015-020R121 meets all these criteria and is manufactured by the same supplier (NorComp Inc.), ensuring mechanical and electrical compatibility with the original specification.

Parameter Comparison

Engineering Selection Recommendations

The 973-015-020R121 is the direct substitute for the obsolete 973-015-020-121. All mechanical and electrical parameters are identical. The substitute part offers the following advantages:

• Active Product Status: The 973-015-020R121 is currently in active production, ensuring long-term availability and supply chain continuity.
• RoHS3 Compliance: The substitute meets ROHS3 compliance requirements, whereas the original is non-compliant. This is significant for applications subject to environmental regulations.
• Improved Moisture Sensitivity: The substitute carries an MSL rating of 1 (Unlimited), providing better handling flexibility compared to the original's Not Applicable designation.
• Bulk Packaging Availability: The substitute is available in bulk packaging with higher inventory levels (4,246 pcs in stock versus 803 pcs for the original).

Selection of the 973-015-020R121 is appropriate for all applications currently using the 973-015-020-121, with no functional or mechanical compromises.

Frequently Asked Questions (FAQ)

Q: Are the 973-015-020-121 and 973-015-020R121 mechanically interchangeable?

A: Yes. Both parts share identical specifications for number of positions (15), shell size (A), cable exit angle (180°), shielding, accessory type (two-piece backshell), cable type (round), plating (nickel over copper), and mating hardware (4-40 screws). They are direct mechanical substitutes.

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

A: The primary differences are product status and compliance certifications. The 973-015-020-121 is obsolete and RoHS non-compliant, while the 973-015-020R121 is active production and ROHS3 compliant. All functional and mechanical parameters are identical.

Q: Can I use the 973-015-020R121 in place of the 973-015-020-121 in existing designs?

A: Yes. The substitute part meets all electrical and mechanical requirements of the original specification. No design modifications are required.

Q: What does the "R" in 973-015-020R121 indicate?

A: The "R" designation indicates a revision or variant within the NorComp 973 series. In this case, it represents the active production version with updated compliance certifications.

Q: Are there any packaging differences between these parts?

A: The original 973-015-020-121 is available in standard packaging, while the 973-015-020R121 is available in bulk packaging. Both are suitable for assembly operations; packaging selection depends on procurement volume requirements.

Q: What is the MSL rating, and why does it differ between these parts?

A: Moisture Sensitivity Level (MSL) indicates handling requirements during storage and assembly. The substitute's MSL 1 (Unlimited) rating means it has no moisture sensitivity restrictions, providing greater flexibility in handling and storage compared to the original's Not Applicable designation.