Molex 0039302039 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0039302039 is a shrouded header connector from the Mini-Fit Jr 5566 series, designed for through-hole mounting in board-to-cable/wire applications. This connector features a 3-position configuration with 0.165" (4.20mm) pitch and gold-plated mating contacts. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications requiring this connector type.

Substiute Parts

0039302039

MolexIn Stock: 10270039302039 Datasheet

Current PartRFQ

0039302031

MolexIn Stock: 91910039302031 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0039302031 qualifies as a direct substitute for the 0039302039 based on the following critical parameters:

• Connector Series: Both parts belong to the Mini-Fit Jr 5566 series
• Number of Positions: Identical 3-position configuration
• Pitch - Mating: Identical 0.165" (4.20mm) spacing
• Connector Type: Both are headers with male pin contacts
• Mounting Type: Both use through-hole mounting
• Shrouding: Both feature shrouded 4-wall design
• Termination: Both use solder termination
• Insulation Material: Both use Polyamide (PA66), Nylon 6/6
• Style: Both are board-to-cable/wire connectors
• Fastening Type: Both use locking ramp fastening

The primary distinction is product status: the 0039302039 is obsolete, while the 0039302031 is active with significantly higher inventory availability (9160 pcs vs. 984 pcs).

Parameter Comparison

Engineering Selection Recommendations

The Molex 0039302031 is the appropriate active equivalent for the obsolete 0039302039. Both parts maintain identical mechanical and electrical interface specifications within the Mini-Fit Jr 5566 series, ensuring direct compatibility in existing designs.

The 0039302031 offers the following advantages:

• Active product status with full manufacturing support
• Higher inventory availability (9160 pcs in stock)
• ROHS3 compliance maintained
• Identical connector geometry and contact configuration
• Equivalent environmental and regulatory certifications (UL94 V-2, EAR99, HTSUS 8536.69.4040)

The contact finish thickness on the mating surface differs between the two parts (15.0µin vs. 30.0µin), with the substitute providing increased plating thickness. This represents an engineering improvement that does not compromise compatibility.

Frequently Asked Questions (FAQ)

Q: Are the 0039302039 and 0039302031 mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.165"), position count (3), mounting type (through-hole), shrouding configuration (4-wall), and contact geometry (square male pins). They are direct mechanical replacements.

Q: What is the difference in contact finish thickness, and does it affect compatibility?

A: The 0039302031 features 30.0µin (0.76µm) gold plating on mating contacts compared to 15.0µin (0.38µm) on the 0039302039. The increased thickness on the substitute provides enhanced durability and does not affect electrical or mechanical compatibility.

Q: Why is the 0039302039 listed as obsolete?

A: The 0039302039 has been superseded by the 0039302031 in Molex's product line. The 0039302031 is the active production equivalent and is recommended for all new designs and ongoing procurement.

Q: Does packaging differ between these parts?

A: The 0039302039 packaging is not specified in available documentation. The 0039302031 is supplied in tray packaging. Confirm packaging requirements with your procurement specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0039302039 and 0039302031 are ROHS3 compliant and carry identical regulatory certifications (UL94 V-2, EAR99, HTSUS 8536.69.4040).

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.