171-025-202-021 Equivalent & Substitute Parts

Part Overview

The NorComp Inc. 171-025-202-021 is a 25 Position D-Sub Receptacle connector with female sockets, designed for panel mount applications. This connector is part of the 171 series and features a DB/B shell size (Shell Size 3) with solder cup termination. The part is currently in stock with 1106 units available as new original inventory. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging requirements differ.

Substiute Parts

171-025-202-021

NorComp Inc.In Stock: 1186171-025-202-021 Datasheet

Current PartRFQ

171-025-203L021

NorComp Inc.In Stock: 1240171-025-203L021 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 171-025-202-021 is based on maintaining electrical and mechanical compatibility within the NorComp 171 series. The substitute part 171-025-203L021 qualifies as a direct equivalent because it maintains the following critical parameters:

• Connector Type: Receptacle, Female Sockets
• Number of Positions: 25
• Shell Size: 3 (DB, B)
• Mounting Type: Panel Mount
• Termination: Solder Cup
• Series: 171 (same manufacturer family)

The primary difference between these parts is packaging format. The main part (171-025-202-021) is supplied in standard packaging, while the substitute (171-025-203L021) is supplied in Tray packaging. Both parts are manufactured by NorComp Inc. and maintain identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 171-025-202-021 and 171-025-203L021 are active products manufactured by NorComp Inc. and are fully compliant with ROHS3 and REACH requirements. Selection between these parts should be based on packaging requirements and inventory availability.

The 171-025-202-021 is suitable for applications requiring standard packaging formats. The 171-025-203L021 provides an equivalent alternative with tray packaging, which may be preferred for automated assembly processes or specific supply chain requirements.

Both parts maintain identical electrical performance, mechanical compatibility, and environmental ratings. The choice between them does not affect circuit functionality or system performance.

Frequently Asked Questions (FAQ)

Q: Can 171-025-203L021 be used as a direct replacement for 171-025-202-021?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (standard versus tray). They are interchangeable in all circuit applications.

Q: What determines compatibility between these substitute parts?

A: Compatibility is determined by matching connector type (receptacle, female sockets), position count (25), shell size (3/DB-B), mounting method (panel mount), and termination style (solder cup). Both parts meet these criteria.

Q: Does packaging format affect connector performance?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical and mechanical performance is identical regardless of packaging.

Q: Are both parts compliant with current regulations?

A: Yes. Both 171-025-202-021 and 171-025-203L021 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What wire gauge compatibility should be considered?

A: Both parts accept wire gauges from 20-28 AWG. Wire gauge selection should be based on circuit current requirements and application specifications, not on the connector part number.