M20-9743946

Description：CONN HEADER R/A 78POS 2.54MM
Series：M20
Mfr：Harwin Inc.
Package：Bulk

SKU:6b22d47076b2 Category: Headers, Male Pins Brand: Harwin Inc.

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Product introduction

M20-9743946 is listed in the Headers, Male Pins range at ChipApex. The manufacturer field lists Harwin Inc.. Its product description is CONN HEADER R/A 78POS 2.54MM. Review the specifications below when checking this part for your BOM.

Headers, Male Pins specifications for M20-9743946

Description：CONN HEADER R/A 78POS 2.54MM
Series：M20
Mfr：Harwin Inc.
Package：Bulk
Connector Type：Header, Cuttable
Contact Type：Male Pin
Pitch - Mating：0.100" (2.54mm)
Number of Positions：78
Number of Rows：2
Row Spacing - Mating：0.100" (2.54mm)
Number of Positions Loaded：All
Style：Board to Board or Cable
Shrouding：Unshrouded
Mounting Type：Through Hole, Right Angle
Termination：Solder
Fastening Type：Push-Pull
Contact Length - Mating：0.228" (5.80mm)
Contact Length - Post：0.118" (3.00mm)
Overall Contact Length：-
Insulation Height：0.200" (5.08mm)
Contact Shape：Square
Contact Finish - Mating：Tin
Contact Finish Thickness - Mating：-
Contact Finish - Post：Tin
Contact Material：Brass
Insulation Material：Polyamide (PA6T), Nylon 6T
Features：-
Operating Temperature：-40°C ~ 105°C
Ingress Protection：-
Material Flammability Rating：UL94 V-0
Insulation Color：Black
Current Rating (Amps)：3A per Contact
Voltage Rating：-

Headers, Male Pins datasheet and documents for M20-9743946

M20-9743946

Headers, Male Pins Overview

Harwin M20-9743946 is a dual in-line (DIL) vertical pin header from the M20 series, designed for board-to-board and wire-to-board connections. It features a 2.54 mm pitch with 39+39 positions arranged in two rows. The connector utilizes brass contacts with tin plating and a black nylon housing. Rated for 750VAC dielectric voltage and 3A current, it supports through-hole soldering. Operating temperatures range from -40°C to +105°C.

Headers, Male Pins Feature Summary

Dual row configuration providing high-density connectivity
Tin-plated brass contacts ensure reliable signal transmission
Vertical orientation facilitates standard PCB mounting

Headers, Male Pins Applications

Industrial control systems requiring robust interconnects
Consumer electronics with high pin count requirements
Telecommunications equipment interfaces

Headers, Male Pins Procurement Notes

Verify part authenticity by checking Harwin branding and RoHS compliance markings on the housing. Ensure the tin plating condition matches specifications for solderability. Confirm that the 39+39 position layout aligns with the target PCB footprint design before finalizing procurement orders.

Headers, Male Pins Selection Notes

Select this component when a dual-row, 2.54mm pitch header is required for vertical mounting. The 39+39 position count suits applications needing extensive I/O or power distribution. Consider the 750VAC rating for insulation needs and the tin finish for general-purpose soldering compatibility without gold plating costs.

Headers, Male Pins Part Context

The M20-9743946 belongs to Harwin's M20 series, known for versatile headers and wire housings. This specific model represents a DIL variant optimized for vertical insertion. It complements single-row options by doubling contact density within similar footprint constraints, serving as a key solution for compact electronic assemblies.