Molex 1731090191 D-Sub Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The Molex 1731090191 is a 9-position D-Sub receptacle connector with female sockets, designed for through-hole, right-angle mounting applications. This connector features a steel shell with tin plating, gold-plated contacts, and board-side flange mounting with 4-40 fasteners. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production support and design continuity.

Substiute Parts

1731090191

MolexIn Stock: 10341731090191 Datasheet

Current PartRFQ

1731090181

MolexIn Stock: 10341731090181 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 1731090181 qualifies as a direct substitute for the 1731090191 based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Connector style, type, and position count match exactly (D-Sub receptacle, 9-position, 2-row)
• Shell size and connector layout are identical (Size 1, DE/E configuration)
• Mounting type and flange feature are the same (through-hole, right-angle, board-side 4-40)
• Termination method is identical (solder)
• Shell material and finish specifications match (steel, tin plated)
• Contact finish and material are equivalent (gold plated, copper alloy)
• Current and temperature ratings meet or exceed application requirements (5A, -55°C ~ 125°C)
• Dielectric material and contact form are the same (PBT, machined)

The primary distinction between these parts is product status and compliance certification, not functional or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1731090181 is the appropriate selection for applications currently using or specifying the 1731090191. The substitute part maintains full electrical and mechanical compatibility while offering the advantage of active product status and current regulatory compliance.

The 1731090181 carries ROHS3 compliance certification and REACH compliance status, making it suitable for applications subject to modern environmental and regulatory requirements. The 1731090191, classified as obsolete and not applicable for RoHS status, presents supply chain risk and potential regulatory constraints in new designs or production continuations.

Both parts share identical connector specifications, mounting characteristics, and performance ratings. Selection between them should be based on product lifecycle requirements and regulatory compliance mandates for the target application.

Frequently Asked Questions (FAQ)

Q: Are the 1731090191 and 1731090181 mechanically interchangeable?

A: Yes. Both connectors feature identical D-Sub receptacle configurations with 9 positions in a 2-row layout, size 1 (DE/E) shell, through-hole right-angle mounting, and board-side 4-40 flange fasteners. PCB footprints and mounting hole patterns are identical.

Q: Can the 1731090181 replace the 1731090191 in existing designs?

A: Yes. The electrical and mechanical parameters are identical. The 1731090181 is a direct functional equivalent with no design modifications required.

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

A: The primary differences are product status and regulatory compliance. The 1731090191 is obsolete and not RoHS-applicable. The 1731090181 is an active product with ROHS3 and REACH compliance certification.

Q: Does packaging differ between these parts?

A: The 1731090191 packaging is not specified in available documentation. The 1731090181 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are the contact materials and finishes identical?

A: Yes. Both parts feature gold-plated contacts on copper alloy base material with identical finish specifications and current ratings of 5A.

Q: What is the operating temperature range for both connectors?

A: Both the 1731090191 and 1731090181 operate across the temperature range of -55°C to 125°C.

Q: Which part should be specified for new designs?

A: The 1731090181 should be specified for new designs due to its active product status and current regulatory compliance certifications.