Harwin M22-2040546 Rectangular Connector Header – Equivalent & Substitute Parts

Part Overview

The Harwin M22-2040546 is a right-angle rectangular connector header designed for through-hole mounting in board-to-board applications. This 10-position, 2-row header operates at 0.079" (2.00mm) pitch and is rated for 1A per contact with an operating temperature range of -40°C to 105°C. The part is Active status and ROHS3 compliant, making it suitable for industrial and commercial electronics applications where reliable interconnection is required.

Equivalent and substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility allows for alternative contact ratings or material specifications that maintain functional compatibility within the application's electrical and mechanical requirements.

Substiute Parts

M22-2040546

Harwin Inc.In Stock: 746M22-2040546 Datasheet

Current PartRFQ

TMM-105-01-G-D-RA

Samtec Inc.In Stock: 829TMM-105-01-G-D-RA Datasheet

MFR RecommendedRFQ

TMM-105-01-L-D-RA

Samtec Inc.In Stock: 1419TMM-105-01-L-D-RA Datasheet

MFR RecommendedRFQ

TMM-105-01-S-D-RA

Samtec Inc.In Stock: 1121TMM-105-01-S-D-RA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the M22-2040546 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Pitch and Position Configuration: All substitutes maintain 0.079" (2.00mm) mating pitch, 10 positions, and 2-row configuration
• Mounting Style: All substitutes are through-hole, right-angle headers suitable for board-to-board applications
• Contact Type and Termination: All substitutes feature male pin contacts with solder termination
• Electrical Performance: Substitute parts from Samtec (TMM series) provide equal or superior current ratings (3.2A per contact vs. 1A), allowing direct substitution in applications where the original part's current capacity is sufficient
• Material and Compliance: All substitutes are ROHS3 compliant with MSL rating of 1, ensuring compatibility with standard manufacturing and storage conditions
• Contact Finish Variations: Samtec substitutes offer gold plating options (TMM-105-01-G-D-RA, TMM-105-01-S-D-RA) or mixed finishes (TMM-105-01-L-D-RA), providing flexibility for different environmental or corrosion resistance requirements

The three Samtec TMM-105 variants differ primarily in contact finish specifications and thickness, allowing selection based on application-specific environmental or reliability requirements.

Parameter Comparison

Engineering Selection Recommendations

All three Samtec TMM-105 variants are qualified substitutes for the Harwin M22-2040546 based on matching mechanical dimensions, pitch configuration, and compliance certifications. The following selection criteria apply:

TMM-105-01-G-D-RA: Select this variant when gold plating on both mating and post contacts is required for enhanced corrosion resistance or when connector durability in harsh environments is a design requirement. This part provides the highest contact finish thickness on the mating surface (20.0µin).

TMM-105-01-S-D-RA: Select this variant when gold plating on the mating contact surface is required with tin plating on the post for cost optimization. This part provides the thickest gold plating on the mating surface (30.0µin) and is suitable for applications requiring superior contact reliability.

TMM-105-01-L-D-RA: Select this variant when a balanced approach between corrosion resistance and cost is needed. This part features thinner gold plating on the mating surface (10.0µin) with tin plating on the post, suitable for standard industrial applications.

All substitutes maintain ROHS3 compliance and MSL rating of 1, ensuring compatibility with standard manufacturing processes. The extended operating temperature range (-55°C to 125°C) of Samtec parts provides additional thermal margin compared to the original part.

Frequently Asked Questions (FAQ)

Q: Can TMM-105 series connectors be used as direct replacements for the M22-2040546?

A: Yes. The TMM-105 series maintains identical mating pitch (0.079" / 2.00mm), position count (10), row configuration (2), and mounting style (through-hole, right-angle). Mechanical and electrical compatibility is confirmed across all three variants.

Q: What is the difference between the three Samtec TMM-105 variants?

A: The variants differ in contact finish specifications. TMM-105-01-G-D-RA features gold on both mating and post contacts. TMM-105-01-S-D-RA and TMM-105-01-L-D-RA feature gold on mating contacts with tin on post contacts, with varying gold thickness (30.0µin vs. 10.0µin respectively).

Q: Are there any electrical performance differences?

A: Samtec substitutes are rated for 3.2A per contact compared to the original part's 1A per contact. This higher current capacity allows substitution in applications where the original part's rating is sufficient. Operating temperature range is also extended (-55°C to 125°C vs. -40°C to 105°C).

Q: Do the substitutes have different insulation materials?

A: Yes. Samtec parts use Liquid Crystal Polymer (LCP) insulation compared to the original part's Polyamide (PA6T) Nylon 6T. Both materials are suitable for standard through-hole applications and maintain equivalent mechanical properties for this connector class.

Q: Are all parts ROHS3 compliant?

A: Yes. The M22-2040546 and all three TMM-105 variants are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring compatibility with standard manufacturing and storage conditions.

Q: What are the inventory levels for each part?

A: M22-2040546: 706 pcs. TMM-105-01-G-D-RA: 723 pcs. TMM-105-01-S-D-RA: 1024 pcs. TMM-105-01-L-D-RA: 1378 pcs.