Molex 1731070339 D-Sub Combo Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The Molex 1731070339 is a 21-position D-Sub combo receptacle connector with right-angle solder termination, designed for applications requiring combined signal and coax or power connectivity. This connector features a female socket configuration with a 4 (DC, C) shell size layout and is rated for 5A current at operating temperatures from -55°C to 130°C.

The 1731070339 is classified as obsolete. Identifying equivalent and substitute parts is essential for maintaining design continuity, ensuring supply chain reliability, and supporting legacy system maintenance and repairs.

Substiute Parts

1731070339

MolexIn Stock: 9531731070339 Datasheet

Current PartRFQ

1731070568

MolexIn Stock: 12971731070568 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 1731070339 is determined by strict equivalence across the following critical parameters:

• Connector Style & Type: D-Sub combo receptacle with female sockets
• Position Configuration: 21 positions (17 + 4 coax or power)
• Shell Size & Layout: 4 (DC, C) - 21WA4
• Mounting & Termination: Through hole, right angle, solder termination
• Electrical Rating: 5A current capacity
• Temperature Range: -55°C to 130°C
• Material Compliance: UL94 V-0 flammability rating

The substitute part Molex 1731070339 meets all these criteria and is therefore classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1731070568 is the direct substitute for the obsolete 1731070339. Both connectors share identical electrical, mechanical, and dimensional specifications across all critical parameters. The primary distinction is product status: the 1731070568 is currently active and available in production quantities, while the 1731070339 is obsolete.

The 1731070568 carries ROHS3 compliance and REACH affected status, providing enhanced regulatory alignment for new designs and ongoing production. The substitute part is available in bulk packaging with 1245 units in current inventory, ensuring supply chain continuity for both legacy system support and new applications.

Selection of the 1731070568 is supported by full electrical and mechanical compatibility, identical flammability certification (UL94 V-0), and equivalent operating temperature range. No design modifications or PCB layout changes are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the Molex 1731070568 be used as a direct replacement for the 1731070339?

A: Yes. Both connectors are identical in connector style, position count, shell size, mounting type, termination method, current rating, and operating temperature range. The 1731070568 is the active production equivalent.

Q: What is the primary difference between these two parts?

A: The 1731070339 is obsolete, while the 1731070568 is active. The 1731070568 includes ROHS3 compliance and REACH affected status. Shell finish differs: the 1731070339 has steel finish, while the 1731070568 has steel with tin plating. The 1731070568 also specifies IP20 ingress protection.

Q: Are there packaging differences between the two parts?

A: Yes. The 1731070339 packaging is not specified in available data. The 1731070568 is supplied in bulk packaging. Both parts share the same base product number (173107) and series designation (FM, FCT 173107).

Q: What are the critical parameters that must match for substitution?

A: Substitution requires equivalence in connector style (D-Sub combo), connector type (receptacle, female sockets), position count (21 with 17 + 4 coax or power), shell size (4 DC, C - 21WA4), mounting type (through hole, right angle), termination method (solder), current rating (5A), and operating temperature range (-55°C to 130°C).

Q: Is the 1731070568 suitable for legacy system repairs?

A: Yes. The 1731070568 provides full electrical and mechanical compatibility with systems originally designed for the 1731070339. No circuit modifications or mechanical redesign is required.