NorComp 974-015-020-121 D-Sub Backshell Connector: Equivalent & Substitute Parts

Part Overview

The NorComp 974-015-020-121 is a 15-position two-piece backshell connector with 40° cable exit angle and shielding for D-Sub applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new procurement cycles. The connector accommodates both 15-position and HD26-position D-Sub sizes with shell size A compatibility.

Substiute Parts

974-015-020-121

NorComp Inc.In Stock: 887974-015-020-121 Datasheet

Current PartRFQ

974-015-020R121

NorComp Inc.In Stock: 1079974-015-020R121 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NorComp 974-015-020-121 is determined by strict equivalence across the following critical parameters:

• Number of Positions: 15
• Compatible Shell Size: A
• Compatible D-Sub Size: 15pos and HD26pos
• Cable Exit Angle: 40°
• Shielding: Shielded
• Cable Type: Round
• Accessory Type: Two Piece Backshell
• Primary Material: Plastic, Metallized
• Plating: Nickel over Copper
• Hardware: Assembly Hardware, Strain Relief
• Mating Screws: 4-40
• Color: Silver

The substitute part 974-015-020R121 maintains identical electrical and mechanical specifications across all these parameters, with the primary distinction being product status transition from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The NorComp 974-015-020R121 serves as the direct active equivalent to the obsolete 974-015-020-121. Selection of the substitute part is supported by:

• Identical mechanical and electrical specifications across all functional parameters
• Active product status ensuring continued availability and supply chain support
• ROHS3 compliance of the substitute part, addressing modern regulatory requirements
• Tray packaging of the substitute part, suitable for automated assembly and inventory management
• Maintained compatibility with existing 15-position and HD26-position D-Sub connector systems

Frequently Asked Questions (FAQ)

Q: Are the 974-015-020-121 and 974-015-020R121 mechanically interchangeable?

A: Yes. Both parts maintain identical specifications for shell size A, 15-position configuration, 40° cable exit angle, shielding, material composition, plating, and hardware. Direct mechanical substitution is supported.

Q: What is the significance of the "R" designation in 974-015-020R121?

A: The "R" designation indicates a revision or updated version of the base product number 974-015. The substitute part represents the current active production variant.

Q: Does the RoHS3 compliance of the substitute part affect compatibility?

A: No. RoHS3 compliance of the 974-015-020R121 indicates improved environmental and regulatory alignment. The electrical and mechanical interface specifications remain unchanged, ensuring full compatibility with existing systems designed for the obsolete part.

Q: What packaging differences exist between these parts?

A: The main part packaging is not specified. The substitute part is supplied in tray packaging, which is standard for production environments and automated assembly processes.

Q: Can the 974-015-020R121 be used in applications originally designed for the 974-015-020-121?

A: Yes. Identical specifications across all functional parameters support direct application substitution without design modification.