M20-8761746P Equivalent & Substitute Parts

Part Overview

The M20-8761746P is a rectangular connector header manufactured by Harwin Inc., designed for surface mount applications with 34 positions at 2.54mm pitch. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications. The part features a cuttable header design with male pins, unshrouded configuration, and solder termination suitable for board-to-board or cable connections.

Substiute Parts

M20-8761746P

Harwin Inc.In Stock: 878M20-8761746P Datasheet

Current PartRFQ

M20-8761842

Harwin Inc.In Stock: 1184M20-8761842 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The M20-8761842 is identified as a manufacturer-recommended substitute for the M20-8761746P. Substitution eligibility is determined by the following critical parameters that must remain consistent:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Rows: 2
• Row Spacing - Mating: 0.100" (2.54mm)
• Connector Type: Header, Cuttable
• Contact Type: Male Pin
• Mounting Type: Surface Mount
• Termination: Solder
• Current Rating: 3A per Contact
• Voltage Rating: 250V
• Operating Temperature: -40°C ~ 105°C
• Material Flammability Rating: UL94 V-0
• Series: M20

The M20-8761842 differs in position count (36 positions versus 34 positions) and contact finish material on the mating surface (Gold versus Tin). These differences are acceptable within the M20 series design framework for applications requiring compatible electrical and mechanical interfaces.

Parameter Comparison

Engineering Selection Recommendations

The M20-8761842 is the active production equivalent for the obsolete M20-8761746P. Both components maintain identical electrical ratings (3A per contact, 250V), mechanical pitch specifications (0.100" / 2.54mm), and thermal operating range (-40°C to 105°C). Both comply with ROHS3 and UL94 V-0 flammability standards.

The M20-8761842 offers two key advantages: active product status ensuring continued availability and supply chain support, and gold-plated mating contacts which provide enhanced corrosion resistance compared to tin plating. The 36-position configuration accommodates applications requiring additional contact capacity within the same physical footprint and pitch geometry.

Selection of the M20-8761842 is appropriate for new designs and production transitions from the obsolete M20-8761746P, provided that the application accommodates the increased position count or allows for unused contact positions.

Frequently Asked Questions (FAQ)

Q: Can the M20-8761842 directly replace the M20-8761746P in existing designs?

A: The M20-8761842 is mechanically and electrically compatible with the M20-8761746P. Both components share identical pitch (2.54mm), row spacing, mounting type (surface mount), and electrical ratings. The primary design consideration is the position count difference: 36 positions versus 34 positions. Applications using all 34 positions of the original part can accommodate the substitute with two unused contact positions.

Q: What is the significance of the contact finish difference between tin and gold?

A: The M20-8761746P features tin-plated mating contacts, while the M20-8761842 features gold-plated mating contacts. Gold plating provides superior corrosion resistance and is preferred for applications with extended shelf life, high-humidity environments, or demanding reliability requirements. Both finishes are compatible with standard solder termination processes.

Q: Why is the M20-8761746P classified as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production and support for this part number. The M20-8761842 represents the active production alternative within the M20 series, ensuring access to current inventory and ongoing technical support.

Q: Are there any compliance or certification differences between these parts?

A: Both the M20-8761746P and M20-8761842 maintain identical compliance certifications: ROHS3 compliance, UL94 V-0 flammability rating, and REACH unaffected status. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both components.

Q: What packaging options are available for the M20-8761842?

A: The M20-8761842 is supplied in bulk packaging, with 1136 pieces available in current inventory. This differs from the original part's packaging specification, which should be confirmed during procurement planning.