Molex 1731120421 D-Sub Contact Equivalent & Substitute Parts

Part Overview

The Molex 1731120421 is a D-Sub contact component classified as a D-shaped connector contact. This part is designated as obsolete, necessitating identification of functionally equivalent alternatives for ongoing procurement and system maintenance. The part maintains RoHS compliance and unlimited moisture sensitivity rating, making it suitable for standard industrial and commercial applications where D-Sub connector assemblies are required.

Substiute Parts

1731120421

MolexIn Stock: 11891731120421 Datasheet

Current PartRFQ

1731120748

MolexIn Stock: 10531731120748 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 1731120421 is based on alignment within the same D-Sub connector category and the shared base product number 173112 series. The identified substitute part 1731120748 maintains compatibility through the following critical parameters:

Substitution Criteria:

• Identical manufacturer (Molex)
• Same connector category (D-Sub, D-Shaped Connectors)
• Shared base product series (173112)
• Equivalent RoHS compliance status
• Matching moisture sensitivity rating (MSL 1)
• Consistent contact function within D-Sub architecture

The substitute part provides documented specifications for contact type, termination method, and material composition, enabling direct functional replacement in D-Sub connector assemblies.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution:

The Molex 1731120748 serves as the documented equivalent for the obsolete 1731120421. Both parts share the same base product series (173112) and maintain equivalent compliance certifications. The substitute part carries ROHS3 compliance, representing an enhanced regulatory status compared to the original RoHS designation. Both components maintain MSL 1 rating, indicating no moisture sensitivity restrictions during storage and handling.

Compliance Considerations:

Both the main part and substitute are classified as obsolete products. Selection between available inventory should be based on specific connector assembly requirements, particularly regarding contact type (Male Pin), termination method (Crimp), and wire gauge compatibility (24-28 AWG) as documented for the substitute part.

Inventory Availability:

Current stock levels support procurement decisions: 1101 units of the main part and 989 units of the substitute part are available as new original components.

Frequently Asked Questions (FAQ)

Q: Why is the Molex 1731120421 listed as obsolete?

A: The product status designation indicates this part is no longer in active production. Substitute parts within the same series remain available to support existing applications and system maintenance.

Q: Can the 1731120748 directly replace the 1731120421 in existing assemblies?

A: Both parts belong to the same D-Sub connector category and share the base product series 173112. Compatibility depends on the specific connector assembly design and contact requirements. The substitute part is specified as a Male Pin contact with Crimp termination and 24-28 AWG wire gauge capability.

Q: What is the difference in RoHS compliance between the two parts?

A: The main part carries RoHS Compliant status, while the substitute part carries ROHS3 Compliant status. ROHS3 represents an updated regulatory compliance designation. Both parts meet current environmental and material restriction requirements.

Q: Are there packaging differences between these parts?

A: The substitute part 1731120748 is specified with Cut Tape (CT) packaging. The main part packaging information is not provided in the available documentation.

Q: What contact specifications should I verify for substitution?

A: Verify that the substitute part specifications align with your assembly requirements: Male Pin contact type, Crimp termination, Copper Alloy material with Gold finish, and 24-28 AWG wire gauge compatibility.

Q: Is the moisture sensitivity rating the same for both parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage, handling, or processing.