M22-2740646 Equivalent & Substitute Parts

Part Overview

The M22-2740646 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle board-to-board or cable applications. This 12-position connector operates at 2.00mm pitch with a 2-row configuration and supports 2A current rating across an operating temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of active equivalent alternatives necessary for ongoing design support and procurement.

Substiute Parts

M22-2740646

Harwin Inc.In Stock: 674M22-2740646 Datasheet

Current PartRFQ

M22-2540605

Harwin Inc.In Stock: 1934M22-2540605 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M22-2740646 is based on strict equivalence of the following critical parameters:

• Pitch - Mating: 0.079" (2.00mm)
• Number of Positions: 12
• Number of Rows: 2
• Row Spacing - Mating: 0.079" (2.00mm)
• Connector Type: Header, Cuttable
• Contact Type: Male Pin
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Current Rating: 2A
• Operating Temperature: -40°C ~ 105°C
• Material Flammability Rating: UL94 V-0
• Insulation Material: Polyamide (PA6T), Nylon 6T

The M22-2540605 meets all these criteria and is classified as an active product, making it a direct functional equivalent for the obsolete M22-2740646.

Parameter Comparison

Engineering Selection Recommendations

The M22-2540605 is the direct substitute for the obsolete M22-2740646. Both parts are manufactured by Harwin Inc. within the M22 series and maintain identical electrical and mechanical specifications for mating pitch, position count, row configuration, mounting orientation, and current rating.

Key differences between the parts are limited to contact finish (tin versus gold) and contact length at mating interface (4.20mm versus 4.60mm). These variations do not affect functional compatibility in applications designed for the original M22-2740646.

Both parts maintain ROHS3 compliance, UL94 V-0 flammability rating, and identical operating temperature ranges. The M22-2540605 is actively manufactured and stocked, providing superior long-term availability compared to the obsolete status of the M22-2740646.

Frequently Asked Questions (FAQ)

Q: Can M22-2540605 be used as a direct replacement for M22-2740646?

A: Yes. Both connectors share identical pitch (2.00mm), position count (12), row configuration (2 rows), mounting type (through-hole right-angle), and electrical ratings (2A, -40°C to 105°C). The M22-2540605 is the active equivalent.

Q: What is the difference in contact finish between these parts?

A: The M22-2740646 features tin contact finish at the mating interface, while the M22-2540605 features gold contact finish. Gold provides enhanced corrosion resistance and lower contact resistance in low-signal applications.

Q: Are there differences in contact length?

A: The mating contact length differs: M22-2740646 is 0.165" (4.20mm) while M22-2540605 is 0.138" (4.60mm). The post contact length remains identical at 0.094" (2.40mm) for both parts. This variation does not affect mechanical or electrical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, UL94 V-0 rated, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both.

Q: What is the availability status of each part?

A: The M22-2740646 is obsolete with limited remaining inventory (652 pcs). The M22-2540605 is active with higher availability (1861 pcs), making it the recommended choice for new designs and ongoing procurement.