1218237-2

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ARINC 1218237-2 backplane connectors are multi-contact connector configurations providing plane-to-plane interconnects within an information handling system. They are particularly used in applications where there are multiple frequencies being transmitted, and are used in combination with the other connectors in the 1218 series, such as the 1218-1 connector and the 1218-3 connector, to create a comprehensive signal and power transmission solution. The 1218-2 connector allows up to eight signals to be transmitted at a time, and can be used in applications such as avionics, industrial controls, audio processing systems, and medical imaging.

The 1218-2 connector is constructed from a zinc die-cast shell that fits over and holds an aluminum alloy contact carrier. The contact carrier has a honeycomb structure, which provides a robust connection between the contacts and the board-to-board jack. The connector includes a peripheral grounding clip, which serves to reduce any potential for EMI or RF emissions from the connector. In order to ensure a good connection between the contacts and the EMI shield, the contacts have a gold plating applied with a mean rate of 0.3µm.

The connector includes two main types of contacts: an insulated thrust contact and a primary contact. The thrust contact provides a physical connection between the two sides of the board while the primary contact provides an electrical interconnect. The thrust contact is composed of an aluminum alloy and an insulated insert, and is designed to provide an air gap between the frontboard and the rearboard. The thrust contact buttons are designed to provide a bias force to reject contaminants such as dust and dirt, and to provide a secure connection between the two sides of the board. The primary contact is composed of a copper alloy and a gold-plated spring contact. It is designed to have low contact force to reduce wear and tear on the connector, provide good electrical contact, and reduce the risk of shorting out components.

The 1218-2 connector also features a variety of shielding options and grounding points to help reduce EMI or RF emissions. The connector may be used in combination with shielded cables, or interfaced with conductive wipes. The wiping action ensures an effective current path between the EMI shield and the contacts, while providing a low contact resistance to reduce any potential for any electrical interference. The connectors can also be grounded through a peripheral grounding clip, which provides a solid connection between the EMI shield and the board.

The 1218-2 connector is designed for use in environments such as avionics, where both power and signal transmission are required. The connector is designed to provide a secure and reliable connection between components, and ensure that high-frequency signals and power can be transmitted reliably and accurately. It is also designed to reduce the amount of EMI or RF emissions that may occur due to any impedance mismatch between the connector contacts and the components being connected.

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