Molex 1731090439 D-Sub Connector - Equivalent & Substitute Parts

Part Overview

The Molex 1731090439 is a 25-position D-Sub crimp plug connector with male pins, designed for free-hanging in-line applications. This part is classified as obsolete and no longer in active production. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for ongoing system maintenance, repairs, and new design implementations where this connector type is required.

Substiute Parts

1731090439

MolexIn Stock: 9261731090439 Datasheet

Current PartRFQ

1731090315

MolexIn Stock: 9681731090315 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part Molex 1731090315 is functionally equivalent to the 1731090439 based on the following critical parameters that determine substitutability:

• Connector Type & Configuration: Both are 25-position D-Sub plug connectors with male pins
• Shell Size: Both use shell size 3 (DB, B) standard D-Sub form factor
• Mounting Style: Both are free-hanging in-line connectors
• Termination Method: Both use crimp termination for wire attachment
• Electrical Ratings: Both support 5A current rating and operate across -55°C to 130°C
• Compliance Standards: Both are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity)
• Material Specifications: Both feature steel shells with tin plating and gold-plated contacts

The primary distinction is product status: the 1731090439 is obsolete, while the 1731090315 is active and currently in production with available inventory.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1731090315 is the direct functional equivalent for applications currently using or requiring the 1731090439. Selection of the 1731090315 is supported by:

• Active Production Status: The 1731090315 is in active production with confirmed inventory availability (923 pcs), ensuring supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance and identical electrical/mechanical specifications
• Certification Alignment: Both parts carry equivalent environmental and safety certifications (MSL 1, UL94 V-0 flammability rating)
• Mechanical Compatibility: Identical connector geometry, pin configuration, and mounting interface ensure direct mechanical substitution without redesign

The 1731090315 is suitable for new designs, repairs, and system upgrades where the 1731090439 was previously specified.

Frequently Asked Questions (FAQ)

Q: Can the 1731090315 directly replace the 1731090439 in existing assemblies?

A: Yes. Both connectors share identical mechanical dimensions, pin configurations, and electrical ratings. The 1731090315 is a direct form-fit-function replacement with no assembly modifications required.

Q: What is the significance of the product status difference?

A: The 1731090439 is obsolete and no longer manufactured. The 1731090315 is the active equivalent currently produced by Molex. For new procurements and long-term supply assurance, the 1731090315 should be specified.

Q: Are there any electrical performance differences between these parts?

A: No. Both connectors are rated for 5A current, operate across -55°C to 130°C, and feature identical contact materials and finishes (gold-plated contacts, steel shells with tin plating).

Q: What packaging is available for the 1731090315?

A: The 1731090315 is supplied in bulk packaging with current inventory of 923 pieces available.

Q: Do both parts meet the same compliance standards?

A: Yes. Both are ROHS3 compliant, REACH affected, and carry identical moisture sensitivity levels (MSL 1 - unlimited). Both meet UL94 V-0 flammability requirements.

Q: Are there any design considerations when switching from 1731090439 to 1731090315?

A: No design changes are necessary. The connectors are mechanically and electrically interchangeable. Existing PCB layouts, cable assemblies, and mating connectors require no modification.