The 901-166 is a straight adapter that connects a BNC Jack to an SMA Plug, enabling compatibility between BNC and SMA connector types in RF and microwave systems. It features a maximum VSWR of 1.3 across the DC-4 GHz frequency range, ensuring minimal signal reflection and high-quality signal transmission. The adapter has a length of 1.16 inches (29.4 mm) and is constructed with plating P51 and insulation type D1 for durability and reliable performance. This adapter is commonly used in test equipment, communication systems, and RF instrumentation where impedance matching and frequency coverage up to 4 GHz are required.