Molex 0879140426 Equivalent & Substitute Parts

Part Overview

The Molex 0879140426 is an active rectangular connector header designed for through-hole mounting applications. This 4-position, 2-row connector with 0.100" (2.54mm) pitch serves board-to-board and cable interconnection requirements across automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter constraints.

Substiute Parts

0879140426

MolexIn Stock: 11020879140426 Datasheet

Current PartRFQ

929665-01-02-EU

3MIn Stock: 1069929665-01-02-EU Datasheet

MFR RecommendedRFQ

929836-01-02-RK

3MIn Stock: 2381929836-01-02-RK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0879140426 is determined by strict alignment of the following critical parameters:

• Connector Type: Header (with or without breakaway feature)
• Contact Type: Male Pin
• Number of Positions: 4
• Number of Rows: 2
• Pitch - Mating: 0.100" (2.54mm)
• Row Spacing - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Shape: Square
• Style: Board to Board or Cable
• Shrouding: Unshrouded
• Material Flammability Rating: UL94 V-0
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The 3M 929665-01-02-EU and 3M 929836-01-02-RK meet all critical substitution criteria. Variations in contact finish, contact length, insulation material, and operating temperature specifications do not preclude substitution when application requirements fall within the provided parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Both 3M substitute parts maintain active product status and full RoHS compliance, ensuring long-term availability and regulatory alignment with the original Molex 0879140426.

The 3M 929665-01-02-EU features gold-plated mating contacts, providing enhanced corrosion resistance in applications requiring extended environmental exposure or high-reliability interconnection.

The 3M 929836-01-02-RK features tin-plated mating contacts, matching the contact finish of the original Molex part and providing direct functional equivalence for standard board-to-board applications.

Both 3M parts specify operating temperature range (-40°C ~ 105°C) and current rating (2.5A), parameters not provided for the original Molex part. Selection should confirm application requirements fall within these specified ranges.

Frequently Asked Questions (FAQ)

Q: Can the 3M 929665-01-02-EU and 3M 929836-01-02-RK be used interchangeably with the Molex 0879140426?

A: Both 3M parts meet the critical substitution parameters: 4-position, 2-row configuration with 0.100" (2.54mm) pitch, through-hole solder termination, push-pull fastening, and UL94 V-0 flammability rating. Interchangeability is confirmed for applications where the specified operating temperature (-40°C ~ 105°C) and current rating (2.5A) are acceptable.

Q: What is the difference between the two 3M substitute parts?

A: The primary difference is contact finish. The 929665-01-02-EU uses gold plating (10.0µin thickness) on mating contacts, while the 929836-01-02-RK uses tin plating (200.0µin thickness). Gold plating provides superior corrosion resistance; tin plating offers cost efficiency and matches the original Molex contact finish.

Q: Are there packaging differences between these parts?

A: All three parts are available in bulk packaging. Inventory levels vary: Molex 0879140426 (1027 pcs), 3M 929665-01-02-EU (1025 pcs), and 3M 929836-01-02-RK (2273 pcs).

Q: Do the insulation material differences affect substitution?

A: The original Molex part uses Liquid Crystal Polymer (LCP) glass-filled insulation, while both 3M substitutes use Polycyclohexylenedimethylene Terephthalate (PCT). Both materials meet UL94 V-0 flammability requirements and MSL 1 moisture sensitivity specifications. Material selection should be confirmed against specific application environmental and mechanical requirements.

Q: What are the contact length variations, and do they matter?

A: The Molex 0879140426 has mating contact length of 0.276" (7.00mm), while both 3M parts have 0.235" (5.97mm). Overall contact length is 0.482" (12.25mm) for Molex and 0.445" (11.30mm) for 3M parts. These variations may affect board thickness compatibility and mating force characteristics. Verify PCB thickness and connector cavity depth against these specifications before substitution.