Amphenol's Quadrax Contacts are designed for high-performance applications requiring high data transfer rates 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. Available in size 8 crimp termination style, these contacts are ideal for use in MIL-DTL-38999 connectors, although modification is required to accommodate the keyed contacts. They are commonly used in Gigabit Ethernet assemblies and other applications demanding reliable, high-speed data transmission.