M20-7833942 Equivalent & Substitute Parts

Part Overview

The M20-7833942 is a 78-position receptacle connector manufactured by Harwin Inc., designed for board-to-board or cable applications with 0.100" (2.54mm) pitch spacing. This connector features gold-plated mating contacts, through-hole solder termination, and push-pull fastening. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible interconnect solutions.

Substiute Parts

M20-7833942

Harwin Inc.In Stock: 1128M20-7833942 Datasheet

Current PartRFQ

0015445878

MolexIn Stock: 11190015445878 Datasheet

MFR RecommendedRFQ

NPPC392LFBN-RC

Sullins Connector SolutionsIn Stock: 827NPPC392LFBN-RC Datasheet

MFR RecommendedRFQ

PPTC392LFBN-RC

Sullins Connector SolutionsIn Stock: 991PPTC392LFBN-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M20-7833942 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of positions: 78
• Pitch spacing: 0.100" (2.54mm)
• Number of rows: 2
• Row spacing: 0.100" (2.54mm)
• Mounting type: Through hole
• Termination: Solder
• Fastening type: Push-pull
• Contact type: Female socket

Secondary Compatibility Considerations:

• Contact finish (mating): Gold or tin acceptable
• Insulation material: Polyamide or equivalent
• Flammability rating: UL94 V-0
• RoHS compliance: ROHS3

The substitute parts listed below maintain the core mechanical and electrical interface requirements. Variations in contact finish, insulation material, and voltage/current ratings are noted where they differ from the main part.

Parameter Comparison

Engineering Selection Recommendations

0015445878 (Molex C-Grid 71850 Series)

This Molex receptacle connector maintains the same connector type, position count, and pitch as the M20-7833942. It is an active product with ROHS3 compliance and UL94 V-0 flammability rating. The primary differences are reduced current rating (2.5A versus 3A) and voltage rating (500VAC versus 1000V). This part is suitable for applications where the lower electrical ratings are acceptable. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin.

NPPC392LFBN-RC (Sullins Connector Solutions)

This Sullins header connector shares the same mechanical interface, position count, and pitch as the M20-7833942. It maintains the 3A current rating and gold mating contact finish. The connector type differs (header versus receptacle), which affects mating interface compatibility. Voltage rating is reduced to 250V. This part is active and ROHS3 compliant with UL94 V-0 rating. Selection requires confirmation that the header configuration is compatible with the mating receptacle in the application.

PPTC392LFBN-RC (Sullins Connector Solutions)

This Sullins header connector provides the same mechanical footprint and position count as the M20-7833942. It maintains the 3A current rating and is active with ROHS3 compliance and UL94 V-0 rating. The mating contact finish is tin rather than gold. The connector type is header, requiring compatibility verification with the mating receptacle. Voltage rating is 250V. This part is suitable for applications where tin contact finish is acceptable and voltage requirements do not exceed 250V.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0015445878 directly replace the M20-7833942 in all applications?

A: The Molex part maintains mechanical compatibility and the same connector type (receptacle). However, the reduced current rating (2.5A versus 3A) and voltage rating (500VAC versus 1000V) must be evaluated against application requirements. If the application operates within these lower electrical limits, direct substitution is feasible.

Q: What is the difference between a receptacle and header connector?

A: The M20-7833942 is a receptacle connector designed to accept mating pins. The Sullins parts (NPPC392LFBN-RC and PPTC392LFBN-RC) are header connectors with protruding pins. These are not interchangeable without corresponding changes to the mating connector. Verify that the application's mating connector is compatible with the header configuration.

Q: Are the Sullins header connectors suitable replacements for the M20-7833942?

A: The Sullins parts provide the same mechanical pitch and position count but differ in connector type (header versus receptacle) and voltage rating (250V versus 1000V). They are suitable only if the application can accommodate a header connector and operates within 250V voltage limits.

Q: What is the significance of contact finish differences (gold versus tin)?

A: The M20-7833942 features gold-plated mating contacts. The PPTC392LFBN-RC uses tin finish. Contact finish affects corrosion resistance and contact reliability. Gold provides superior corrosion resistance, particularly in harsh environments. Tin is acceptable for general-purpose applications with adequate environmental protection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The M20-7833942 and all listed substitute parts are ROHS3 compliant with UL94 V-0 flammability ratings, meeting current regulatory requirements.

Q: What packaging formats are available for these parts?

A: The M20-7833942 packaging format is not specified in available data. The Molex 0015445878 is supplied in tray packaging. The Sullins parts (NPPC392LFBN-RC and PPTC392LFBN-RC) are supplied in tray packaging. Confirm packaging requirements with procurement specifications.