M20-7832946 Equivalent & Substitute Parts

Part Overview

The M20-7832946 is a 58-position receptacle connector manufactured by Harwin Inc., designed for 0.100" (2.54mm) pitch board-to-board or cable applications with through-hole solder termination. This connector features tin contact finish, push-pull fastening, and operates across -40°C to 105°C. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible interconnect solutions.

Substiute Parts

M20-7832946

Harwin Inc.In Stock: 951M20-7832946 Datasheet

Current PartRFQ

66953-029LF

Amphenol ICC (FCI)In Stock: 84566953-029LF Datasheet

MFR RecommendedRFQ

NPPC292LFBN-RC

Sullins Connector SolutionsIn Stock: 1149NPPC292LFBN-RC Datasheet

MFR RecommendedRFQ

PPPC292LFBN-RC

Sullins Connector SolutionsIn Stock: 711PPPC292LFBN-RC Datasheet

MFR RecommendedRFQ

PPTC292LFBN-RC

Sullins Connector SolutionsIn Stock: 725PPTC292LFBN-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the M20-7832946 is determined by the following critical parameters that must align with the original design:

• Connector Type & Position Count: 58-position configuration is mandatory for mechanical and electrical compatibility
• Pitch & Row Configuration: 0.100" (2.54mm) pitch with 2-row layout ensures mating interface compatibility
• Mounting & Termination: Through-hole solder termination is required for PCB integration
• Fastening Mechanism: Push-pull fastening type must be maintained for connector retention
• Electrical Ratings: Current rating of 3A and voltage rating of 1000V establish minimum performance thresholds
• Environmental Compliance: UL94 V-0 flammability rating and ROHS3 compliance are required for regulatory alignment

The substitute parts listed below meet these core substitution criteria. Variations in contact finish (gold vs. tin), connector type (receptacle vs. header), insulation material, and voltage rating above the minimum threshold are permissible within the substitution scope.

Parameter Comparison

Engineering Selection Recommendations

66953-029LF (Amphenol ICC): This receptacle connector maintains the same connector type as the original M20-7832946, providing direct form-factor compatibility. The gold contact finish offers enhanced corrosion resistance compared to tin. The extended operating temperature range (-65°C to 125°C) and higher voltage rating (1250V) exceed original specifications. Product status is active with established supply chain availability.

NPPC292LFBN-RC, PPPC292LFBN-RC, PPTC292LFBN-RC (Sullins Connector Solutions): These header connectors provide functional substitution with identical 58-position, 0.100" pitch, 2-row configuration and push-pull fastening. All three parts maintain ROHS3 compliance and UL94 V-0 flammability rating. The connector type differs from the original (header vs. receptacle), requiring PCB layout and mating interface verification. NPPC292LFBN-RC and PPPC292LFBN-RC feature gold contact finish; PPTC292LFBN-RC maintains tin finish matching the original. All three are active products with current inventory availability.

Selection should prioritize 66953-029LF for direct receptacle-to-receptacle substitution, or Sullins header options where board-to-board header configuration is acceptable and PCB redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Can the M20-7832946 be directly replaced with 66953-029LF?

A: Yes. Both are 58-position receptacle connectors with 0.100" pitch, 2-row configuration, through-hole solder termination, and push-pull fastening. The 66953-029LF meets or exceeds all electrical and environmental specifications of the original part.

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

A: The M20-7832946 is a receptacle (socket) connector designed to accept mating pins. The Sullins parts (NPPC292LFBN-RC, PPPC292LFBN-RC, PPTC292LFBN-RC) are header connectors with protruding pins. Direct substitution requires the mating connector to be compatible with the header pin configuration.

Q: Why do some substitute parts have lower voltage ratings (250V vs. 1000V)?

A: The Sullins header connectors are rated for 250V, which is below the original 1000V specification. These parts are suitable only for applications where the actual operating voltage does not exceed 250V. For high-voltage applications, 66953-029LF (1250V rating) is the appropriate choice.

Q: What is the significance of contact finish (tin vs. gold)?

A: Tin finish is cost-effective and suitable for general-purpose applications. Gold finish provides superior corrosion resistance and is preferred for high-reliability or harsh environment applications. Both finishes are electrically compatible within the same connector family.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are RoHS compliant (either ROHS3 or RoHS). The original M20-7832946 is ROHS3 compliant, and all substitutes maintain this or equivalent compliance level.

Q: What packaging formats are available for the substitute parts?

A: 66953-029LF is supplied in tube packaging. NPPC292LFBN-RC, PPPC292LFBN-RC, and PPTC292LFBN-RC are supplied in tray packaging. Packaging format does not affect electrical or mechanical compatibility.