970-037-020-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 970-037-020-121 is a 37-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 functionally equivalent alternatives essential for ongoing system support and procurement planning. The part operates within the D-Sub, D-Shaped Connectors category and serves as a critical interface component for shielded connector assemblies.

Substiute Parts

970-037-020-121

NorComp Inc.In Stock: 1114970-037-020-121 Datasheet

Current PartRFQ

970-037-020R121

NorComp Inc.In Stock: 1114970-037-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 970-037-020-121 is determined by strict equivalence across the following critical parameters:

• Number of Positions: Must be 37
• Accessory Type: Must be Two Piece Backshell
• Compatible Shell Size: Must be C
• Compatible D-Sub Size: Must support 37pos and HD62pos
• Cable Exit Angle: Must be 180°
• Shielding Configuration: Must be Shielded
• Cable Type: Must be Round
• Plating Specification: Must be Nickel over Copper
• Hardware Configuration: Must include Assembly Hardware and Grommets
• Mating Screws: Must be 4-40

The substitute part 970-037-020R121 meets all these criteria and represents a direct functional equivalent with improved product status classification.

Parameter Comparison

Engineering Selection Recommendations

The 970-037-020R121 is the direct equivalent substitute for the obsolete 970-037-020-121. Both parts are manufactured by NorComp Inc. and share identical electrical and mechanical specifications across all critical parameters.

The substitute part offers two significant advantages:

1. Product Status: The 970-037-020R121 maintains Active product status, ensuring continued availability and manufacturer support, whereas the original part is classified as Obsolete.

2. Regulatory Compliance: The 970-037-020R121 is ROHS3 Compliant, providing enhanced environmental compliance compared to the RoHS non-compliant status of the original part. Both parts maintain REACH Unaffected and EAR99 ECCN classifications.

Selection of the 970-037-020R121 is appropriate for new designs, system upgrades, and replacement procurement where regulatory compliance and long-term availability are required.

Frequently Asked Questions (FAQ)

Q: Are the 970-037-020-121 and 970-037-020R121 mechanically interchangeable?

A: Yes. Both parts are two-piece backshells with identical shell size (C), position count (37), cable exit angle (180°), and 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 970-037-020R121 is an active product with ROHS3 compliance, while the 970-037-020-121 is obsolete and RoHS non-compliant. All electrical and mechanical parameters are identical.

Q: Can the 970-037-020R121 be used in applications originally designed for the 970-037-020-121?

A: Yes. The substitute part meets all functional requirements and maintains compatibility with 37-position and HD62-position D-Sub connectors with shell size C.

Q: What packaging is available for the substitute part?

A: The 970-037-020R121 is supplied in Bulk packaging.

Q: Are there any compatibility considerations with cable types?

A: Both parts are specified for round cable types with 180° exit configuration. Cable diameter and grommet specifications must be verified against the connector assembly requirements.

Q: What is the significance of the "R" designation in the part number 970-037-020R121?

A: The "R" designation indicates a revision or variant within the NorComp 970 series. In this case, it represents the active, compliant version of the backshell connector.