Molex 0015978043 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0015978043 is a through-hole, right-angle rectangular connector header designed for board-to-cable/wire applications. This component features a 4-position configuration with 0.165" (4.20mm) pitch spacing, shrouded 4-wall design, and solder termination with locking ramp fastening. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

0015978043

MolexIn Stock: 8120015978043 Datasheet

Current PartRFQ

0050361768

MolexIn Stock: 26140050361768 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0015978043 is determined by strict alignment of the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Mating pitch (0.165" / 4.20mm)
• Number of positions (4)
• Number of rows (2)
• Mounting style (Through Hole, Right Angle)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Fastening mechanism (Locking Ramp)
• Contact material and finish (Brass with Tin plating)
• Flammability rating (UL94 V-0)
• RoHS compliance (ROHS3)

The substitute part Molex 0050361768 meets all these critical parameters. Variations in row spacing, insulation height, contact post length, and insulation material do not prevent functional substitution when these core parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0050361768 is the direct substitute for the obsolete Molex 0015978043. Both components maintain identical mating pitch, position count, row configuration, mounting orientation, shrouding design, termination method, and fastening mechanism. Both parts carry UL94 V-0 flammability certification and ROHS3 compliance, meeting regulatory requirements for industrial and telecommunications applications.

The substitute part is currently in active production status with significantly higher inventory availability (2592 units versus 782 units), ensuring supply chain continuity. The insulation material differs (Polyamide/Nylon 6/6 versus Polyester), and row spacing is reduced (0.165" versus 0.217"), but these variations do not affect functional compatibility when the core mating parameters remain aligned.

Frequently Asked Questions (FAQ)

Q: What determines whether the Molex 0050361768 can substitute for the 0015978043?

A: Substitution is valid when the mating pitch (0.165" / 4.20mm), number of positions (4), row count (2), connector type (Header), contact type (Male Pin), mounting style (Through Hole, Right Angle), shrouding (4-Wall), termination (Solder), and fastening mechanism (Locking Ramp) remain identical. The 0050361768 meets all these criteria.

Q: Does the difference in row spacing affect compatibility?

A: Row spacing differences (0.217" versus 0.165") relate to the physical envelope of the connector body but do not affect mating compatibility when the mating pitch and position count remain constant. PCB layout must accommodate the specific row spacing of the selected part.

Q: Why is the insulation material different between these parts?

A: The main part uses Polyester insulation while the substitute uses Polyamide (PA66) / Nylon 6/6. Both materials meet UL94 V-0 flammability requirements and are suitable for industrial and telecommunications applications. Material selection reflects series design evolution between the Mini-Fit TPA 30070 and Mini-Fit Jr 5569 series.

Q: Are both parts RoHS compliant?

A: Yes. Both the Molex 0015978043 and 0050361768 are ROHS3 compliant, meeting regulatory requirements for restricted substance elimination.

Q: What is the packaging difference?

A: The main part packaging is not specified in available data. The substitute part is supplied in Tray packaging, which is standard for production quantities.

Q: Why should I select the substitute if the main part is in stock?

A: The main part is classified as obsolete, indicating discontinued production. The substitute is in active production status with higher inventory availability, providing long-term supply security and reducing future sourcing risk.