973-025-020-121 D-Sub Backshell Connector - Equivalent & Substitute Parts

Part Overview

The 973-025-020-121 is a 25-position two-piece backshell connector manufactured by NorComp Inc., designed for D-Sub applications with 180° cable exit and shielded configuration. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new procurement requirements.

Substiute Parts

973-025-020-121

NorComp Inc.In Stock: 1225973-025-020-121 Datasheet

Current PartRFQ

973-025-020R121

NorComp Inc.In Stock: 3590973-025-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 973-025-020-121 is determined by the following critical parameters:

• Connector Configuration: 25-position two-piece backshell design
• Mechanical Compatibility: Shell size B, compatible with 25pos and HD44pos D-Sub connectors
• Cable Interface: 180° cable exit with round cable type
• Electrical Protection: Shielded configuration
• Contact Interface: Nickel over Copper plating with 4-40 mating screws
• Physical Characteristics: Silver color, plastic with metallized material composition

The substitute part 973-025-020R121 maintains identical electrical and mechanical specifications across all critical parameters, with the primary distinction being active product status and improved regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 973-025-020R121 is the direct active equivalent for the obsolete 973-025-020-121. All electrical and mechanical parameters are identical, ensuring form, fit, and function compatibility in existing applications.

Product Status Consideration: The 973-025-020R121 maintains active product status with current manufacturing support, addressing the obsolescence of the original part number.

Regulatory Compliance: The substitute part achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements. Both parts maintain identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Packaging: The substitute part is supplied in bulk packaging, compared to the original part's unspecified packaging configuration.

Frequently Asked Questions (FAQ)

Q: Are the 973-025-020-121 and 973-025-020R121 mechanically interchangeable?

A: Yes. Both parts are 25-position two-piece backshells with identical shell size B compatibility, 180° cable exit, shielded configuration, and identical hardware specifications (4-40 mating screws). They are direct mechanical equivalents.

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

A: The primary differences are product status and regulatory compliance. The 973-025-020R121 is an active product with ROHS3 compliance, while the 973-025-020-121 is obsolete and RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Can the 973-025-020R121 be used as a replacement in existing designs using 973-025-020-121?

A: Yes. The substitute part maintains identical form, fit, and function across all critical parameters. No design modifications are required.

Q: Are there any compatibility restrictions with D-Sub connector sizes?

A: Both parts are compatible with 25pos and HD44pos D-Sub connectors with shell size B. No additional compatibility restrictions apply.

Q: What is the significance of the packaging difference?

A: The substitute part is supplied in bulk packaging. This affects procurement and handling procedures but does not impact electrical or mechanical performance.