978-009-020-121 D-Sub Backshell Connector Equivalent & Substitute Parts

Part Overview

The 978-009-020-121 is a 9-position two-piece backshell connector with 180° cable exit and shielding, manufactured by NorComp Inc. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing system maintenance and new designs. The backshell serves as a protective and strain relief accessory for D-Sub connectors in shielded applications requiring round cable configurations.

Substiute Parts

978-009-020-121

NorComp Inc.In Stock: 1150978-009-020-121 Datasheet

Current PartRFQ

978-009-020R121

NorComp Inc.In Stock: 1202978-009-020R121 Datasheet

DirectRFQ

5745854-1

TE Connectivity AMP ConnectorsIn Stock: 11135745854-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 978-009-020-121 are identified based on strict parameter matching across the following critical specifications:

• Number of Positions: 9
• Compatible Shell Size: E
• Compatible D-Sub Size: 9pos and HD15pos
• Cable Exit: 180°
• Shielding: Shielded
• Cable Type: Round
• Plating: Nickel over Copper
• Mating Screws: 4-40
• Color: Silver

Two substitute parts meet these electrical and mechanical requirements: the 978-009-020R121 (NorComp Inc., Active status) and the 5745854-1 (TE Connectivity AMP Connectors, Active status). Both maintain identical functional parameters and physical compatibility with the original part.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts provide functional equivalence to the 978-009-020-121 based on identical electrical and mechanical parameters. Selection between substitutes should consider the following factors:

The 978-009-020R121 maintains NorComp Inc. manufacturer continuity and achieves ROHS3 compliance with REACH Unaffected status. This part is the direct manufacturer upgrade path from the obsolete 978-009-020-121.

The 5745854-1 from TE Connectivity AMP Connectors provides an alternative from an established connector manufacturer with RoHS compliance. This part carries REACH Affected status, which may require additional regulatory evaluation depending on application jurisdiction.

Both parts feature MSL Rating 1 (Unlimited) and are available in active production status with current inventory.

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the 978-009-020-121?

A: The substitute parts match all critical parameters: 9-position configuration, Shell Size E compatibility, 180° cable exit, shielded design, round cable type, nickel over copper plating, and 4-40 mating screws. These parameters define mechanical and electrical compatibility with D-Sub connectors.

Q: Why is the original part listed as obsolete?

A: The 978-009-020-121 is classified as obsolete by the manufacturer. The 978-009-020R121 represents the active production equivalent from NorComp Inc.

Q: What is the difference between REACH Unaffected and REACH Affected status?

A: REACH Unaffected indicates the part is not subject to REACH regulatory requirements. REACH Affected indicates the part may contain substances regulated under REACH and requires compliance documentation for certain applications and jurisdictions.

Q: Are there packaging differences between the substitutes?

A: The original 978-009-020-121 packaging is not specified in the data. Both substitute parts are available in Bulk packaging.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, based on identical mechanical and electrical parameters. The parts are mechanically and functionally interchangeable for D-Sub connector backshell applications requiring 9-position, 180° shielded configurations.