Amphenol's Quadrax Contacts are designed for high-performance applications requiring high data transfer rates, low power consumption, and excellent EMI compatibility. The contacts feature four strategically spaced inner contacts forming two 100 or 150 Ohm matched impedance differential pairs, and a rugged outer contact for durability. They are typically used in MIL-DTL-38999 Series III connectors and require modification to accommodate keyed contacts. Available in various configurations and cable types, these contacts are ideal for Gigabit Ethernet and other high-speed data transmission applications.