74390-291

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The 74390-291 connector is a type of rectangular connector, categorized specifically as an array, edge type, mezzanine (board to board) connector. These connectors are used primarily for internal connection of PCBs, card edge connections, and similar applications. A mezzanine connector is a wide wafer format connector arrangement that connects two perpendicular printed circuit boards at a 90 degree angle. The 74390-291 connector is designed with a smaller array I/O connector which allows for a high density, high reliability signal transmission for limited I/O port applications.

The 74390-291 connector is a fully isolated array I/O connector designed to provide stable electrical performance with high reliability and compact size. It consists of two connector sets (modules), each with six pins and a housing for each connector. The module housing structure provides the necessary strength to securely lock the pins during board connection and firmly hold the board in place. This ensures reliable electrical contact and better heat dissipation. In addition, the connector housing provides dust prevention and moisture resistance.

The 74390-291 connector utilizes an insulated differential signal format, which helps to reduce ground bounces and crosstalk. This feature makes it ideal for high-speed data transmission and switching applications. Its contact size is 0.5mm pitch and has an insertion force of less than 20N. The contact resistance currently stands at 8000 mΩ max. The operating temperature range of the 74390-291 is between -40°C to 105°C and its insulation resistance is 200 mV max.

In operation, the connection process begins when the lower connector board is inserted into the two connector modules. The pins of the two connecting boards align correctly in their mating slots and the board locking features of both the upper and lower connector securely lock them in place. The connector module can then be released from the upper connector and the process is complete. In order to guarantee reliable connection, the pins of the two connecting boards must form a tight enfacement when locked. This prevents any loose electrical contact or electrical shorts, as well as any lost signal integrity.

The 74390-291 connector is an excellent choice for electromechanical applications that require a high-speed data transmission. It is highly reliable, compact and dust-resistant, and meets the requirements of today’s high-speed signal transmission. It is used in many different industries including automotive, aerospace, telecom, industrial, and medical applications. The 74390-291 connector is a reliable and cost-effective solution for any application that requires a high level of reliable data transmission.

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