142-0801-806 is an SMA 50 Ohm end launch plug receptacle with round contact designed for direct attachment to microstrip circuit board structures. This nickel-plated connector operates across a frequency range of 0–18 GHz with an impedance of 50 Ohms and is engineered to achieve low VSWR performance on double-sided FR4 circuit boards with 1 oz. copper on both sides. The connector features a board thickness of 0.062 inches (1.57 mm), with contact dimensions "A" of 0.068 inches (1.73 mm) and "B" of 0.073 inches (1.85 mm), and includes a hex nut of 0.312 inches (7.92 mm). The design meets MIL-C-39012 Series SMA engagement specifications with a mating torque of 7 to 10 inch-pounds and contact resistance of 3.0 milliohms initial and 4.0 milliohms after environmental testing. This connector is ideal for high-frequency RF/microwave applications requiring direct board-level integration with reliable electrical performance and mechanical durability.