M20-7882346 Equivalent & Substitute Parts

Part Overview

The M20-7882346 is a 46-position receptacle connector manufactured by Harwin Inc., designed for 0.100" (2.54mm) pitch through-hole, right-angle PCB mounting applications. This connector features tin-plated contacts, push-pull fastening, and is rated for 3A at 1000V across general purpose, industrial, and telecommunications applications. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

M20-7882346

Harwin Inc.In Stock: 1113M20-7882346 Datasheet

Current PartRFQ

M20-7882546

Harwin Inc.In Stock: 998M20-7882546 Datasheet

MFR RecommendedRFQ

0719730223

MolexIn Stock: 7270719730223 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M20-7882346 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Connector type: Receptacle
• Contact type: Female socket
• Pitch - mating: 0.100" (2.54mm)
• Number of rows: 2
• Mounting type: Through hole, right angle
• Termination: Solder
• Fastening type: Push-pull
• Operating temperature range: -40°C ~ 105°C minimum
• Material flammability rating: UL94 V-0
• RoHS3 compliance

Secondary Compatibility Considerations:

• Number of positions: 46 positions (exact match preferred; higher position counts acceptable with design verification)
• Contact finish: Tin or gold plating acceptable
• Insulation material: Polyamide or liquid crystal polymer acceptable
• Current and voltage ratings: Must meet or exceed 3A and 1000V

The substitute parts listed below maintain compatibility across all primary criteria while offering either identical or enhanced specifications in secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

M20-7882546 (Harwin Inc.)

This substitute maintains identical mechanical and electrical specifications to the M20-7882346 with the exception of position count (50 vs. 46). Both parts share the same series designation (M20), identical pitch, row spacing, mounting configuration, and contact materials. The M20-7882546 is currently in active production status with ROHS3 compliance and UL94 V-0 flammability rating. Selection of this part requires verification that the additional 4 positions do not conflict with existing PCB layout or mating connector specifications. Harwin Inc. maintains consistent manufacturing standards across the M20 series, ensuring compatibility with existing supply chain and assembly processes.

0719730223 (Molex C-Grid 71973 Series)

This substitute provides exact position count matching (46 positions) and maintains all critical mechanical and thermal parameters. The primary distinction is the gold-plated mating contact finish (15.0µin / 0.38µm) compared to tin plating on the original part. Gold plating provides enhanced corrosion resistance and contact reliability in demanding environments. The Molex part utilizes liquid crystal polymer (LCP) insulation material instead of polyamide, offering superior dimensional stability and thermal performance. This part is in active production with ROHS3 compliance and UL94 V-0 rating. Current and voltage ratings are not specified in available documentation; verification against application requirements is necessary before selection.

Frequently Asked Questions (FAQ)

Q: Can the M20-7882546 (50-position) directly replace the M20-7882346 (46-position)?

A: Mechanical and electrical compatibility is maintained. The additional 4 positions require verification that the mating connector and PCB layout accommodate the larger footprint. Harwin Inc. M20 series connectors maintain consistent pitch and row spacing, supporting direct substitution when position count increase is acceptable.

Q: What is the primary difference between tin and gold contact finishes?

A: Tin-plated contacts (M20-7882346, M20-7882546) provide cost-effective performance for general applications. Gold-plated contacts (0719730223) offer superior corrosion resistance and contact reliability, particularly in high-humidity, corrosive, or high-reliability applications. Both finishes are suitable for 3A current applications; selection depends on environmental exposure and reliability requirements.

Q: Are the Harwin M20-7882546 and Molex 0719730223 interchangeable?

A: Both parts maintain identical pitch (0.100"), row configuration (2 rows), mounting type (through-hole right-angle), and operating temperature range (-40°C ~ 105°C). The M20-7882546 provides exact position matching and identical insulation material. The Molex part offers gold plating and LCP insulation. Direct mechanical interchangeability is supported; electrical performance verification is recommended for the Molex part due to unspecified current and voltage ratings.

Q: Why is the M20-7882346 listed as obsolete?

A: Obsolescence typically reflects manufacturer discontinuation of production. The M20-7882546 (50-position variant) and cross-manufacturer alternatives remain in active production, providing continued design support and supply availability.

Q: What compliance certifications apply to these substitutes?

A: All listed parts maintain ROHS3 compliance and UL94 V-0 flammability rating, meeting regulatory requirements for industrial, telecommunications, and general-purpose applications. REACH status is unaffected for all parts.

Q: Does insulation material affect connector performance?

A: Polyamide (PA6T) and liquid crystal polymer (LCP) both meet UL94 V-0 requirements and support the specified operating temperature range. LCP offers superior dimensional stability and lower moisture absorption, beneficial in high-temperature or high-humidity environments. Material selection does not affect electrical performance for standard applications.