977-015-020-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 977-015-020-121 is a 15-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, which necessitates identification of active equivalent parts to maintain supply chain continuity for existing designs and legacy system support.

Substiute Parts

977-015-020-121

NorComp Inc.In Stock: 830977-015-020-121 Datasheet

Current PartRFQ

977-015-020R121

NorComp Inc.In Stock: 18328977-015-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 977-015-020R121 qualifies as a direct substitute for the 977-015-020-121 based on the following critical parameters that determine functional and mechanical compatibility:

• Number of Positions: Both parts specify 15 positions
• Compatible Shell Size: Both support Shell Size A
• Compatible D-Sub Size: Both support 15pos and HD26pos configurations
• Cable Exit Angle: Both feature 180° cable exit
• Shielding Configuration: Both are shielded
• Accessory Type: Both are two-piece backshell connectors
• Cable Type: Both accommodate round cable
• Plating Specification: Both use Nickel over Copper
• Hardware Configuration: Both include assembly hardware and strain relief with 4-40 mating screws
• Color: Both are silver

The substitute part maintains identical electrical and mechanical specifications while transitioning from obsolete to active product status.

Parameter Comparison

Engineering Selection Recommendations

The 977-015-020R121 is the direct active equivalent for the obsolete 977-015-020-121. Selection of the substitute part is based on:

• Product Status Alignment: The substitute transitions from obsolete to active status, ensuring continued availability and supply chain support
• Regulatory Compliance: The substitute achieves ROHS3 compliance, whereas the original part is non-compliant
• Functional Equivalence: All electrical and mechanical parameters remain identical, ensuring drop-in compatibility within existing designs
• Packaging Availability: The substitute is available in bulk packaging, supporting production requirements

Frequently Asked Questions (FAQ)

Q: Can the 977-015-020R121 be used as a direct replacement for the 977-015-020-121?

A: Yes. Both parts share identical specifications for number of positions, shell size, D-Sub compatibility, cable exit angle, shielding, plating, and hardware configuration. The substitute is mechanically and electrically compatible.

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

A: The 977-015-020R121 is the active production equivalent of the obsolete 977-015-020-121. The substitute achieves ROHS3 compliance and is available in bulk packaging, whereas the original part is non-compliant and obsolete.

Q: Are there any compatibility concerns when substituting the 977-015-020R121 for the 977-015-020-121?

A: No compatibility concerns exist. Both parts support the same D-Sub sizes (15pos and HD26pos), shell size A, and cable configurations. The 4-40 mating screws and strain relief hardware are identical.

Q: What packaging options are available for the substitute part?

A: The 977-015-020R121 is supplied in bulk packaging, suitable for production assembly and integration into connector systems.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The 977-015-020R121 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing.