The MDC Microdot Feedthrough is the smallest threaded coaxial connector available for ultra-high vacuum (UHV) applications. Its compact design makes it a preferred choice in the vacuum coating industry, particularly in crystal sensor deposition monitors where precision and reliability are critical.

Each unit features a noise shield for clean instrumentation transmission and includes an air-side connector for quick integration. MDC offers this feedthrough in three mounting styles—Conflat, Kwik-Flange™, and Weldable—to meet diverse installation requirements. Complementary prewired cable assemblies and in-vacuum microdot accessories are also available for a complete system solution.

Industry Applications

Microdot Feedthroughs are widely used in vacuum coating equipment, thin film deposition systems, and crystal sensor monitoring devices. They are also ideal for scientific research instruments, analytical equipment, and UHV-compatible test setups where space constraints, high bakeout capability, and low signal noise are critical. Their durability and precision make them an industry standard in coating and deposition monitoring.