B5743-204-M-L-1

Overview

The B5743-204-M-L-1 is a male header connector from the Harwin Datamate L-Tek series. It features a 4-position (2+2) configuration with a 2 mm pitch and dual in-line layout. Designed for horizontal through-hole mounting, it utilizes solder pin termination. The contacts are gold-plated phosphor bronze, housed in black polyester reinforced with glass fiber. It operates within a temperature range of -55°C to +125°C and carries UL94 V-0 flammability ratings.

Feature Summary

• Horizontal through-hole mounting style for board-to-board or cable applications
• Gold-plated contacts ensure reliable signal transmission
• Shrouded four-wall design provides insulation protection
• Pin lock fastening type secures mating connections

Applications

• Industrial control systems requiring robust interconnects
• Test and measurement equipment interfaces
• Embedded electronics modules

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official Harwin documentation. Confirm that the specific suffix matches the required horizontal orientation and contact configuration. Ensure compliance with project specifications regarding material composition and environmental operating ranges before finalizing procurement orders.

Selection Notes

Select this component when a low-profile horizontal connection is required for compact PCB layouts. The 2 mm pitch allows for dense packing while maintaining adequate spacing. Consider the through-hole installation method for superior mechanical stability compared to surface mount alternatives in high-vibration environments.

Part Context

This connector belongs to the Datamate L-Tek family, known for high-density interconnect solutions. The B5743 prefix indicates a male header variant. It pairs with corresponding female sockets to form secure electrical pathways in modular electronic assemblies.

Replacement Considerations

M80-8670422 is a confirmed substitute part number for this component.