QTH-090-03-C-D-A

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QTH-090-03-C-D-A Application Field and Working Principle

QTH-090-03-C-D-A rectangular connectors are typically used in mezzanine (board to board) connections, enabling the transmission of both power and signals between a host board and daughter card. As a type of edge type connector, its components are characterized by a small size making it perfect for applications with space constraints.

The QTH-090-03-C-D-A is a two-piece connector that features top and bottom parts, with the top part containing up to nine terminals (3 rows of 3 each) and the bottom part containing up to nine receptacles (3 rows of 3 each). When assembled, the two parts space together and the terminals make contact with the receptacles, thus creating a reliable board to board electrical connection. The contacts are made of phosphor bronze with a gold plating, giving them maximum durability and reducing chances of electrical resistance over time.

The connection terminals may be powered with an operating voltage up to 250V and 16A, but this will depend on the conductor in use. While the contact resistance usually stays between 20-35mΩ, the insulation resistance is rated at 1000MΩ to ensure minimal signal loss. The individual connectors maintain a working temperature range of -25°C to +85°C.

To ensure reliable functioning, the connectors are designed with a polarizing key ensuring proper alignment of lower and upper parts. Additionally, the contact bodies are recessed in the center of the top part of the connector, assuring proper contact between the lower and upper parts prior to finishing the assembly. This prevents the possibility of a faulty or incomplete connection being established.

Advantages of using the QTH-090-03-C-D-A connectors include easy maintenance, long life, small size, high density, and low noise. With its board-to-board functionality, it is also highly economical when compared to other connectors.

The QTH-090-03-C-D-A connectors are ideal for a wide range of applications and systems, including telecommunications, automotive, industrial electronics, medical devices, surveillance systems, and consumer electronics. They can also be used in harsh environments and in systems with high vibration levels.

For reliable performance and optimal signal transmission, the QTH-090-03-C-D-A connectors are a great choice for small size and space constraints. The connector\'s reliable contact characteristics and long life, coupled with its flexibility of application make it a great option for mezzanine board designs.

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