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Ceramic To Metal Technology

Microdot Coaxial Feedthroughs

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When to Use Microdot and Hybrid Series Feedthroughs

Microdot Specifications for Grounded Coaxial

BMicrodot style feedthroughs are the smallest UHV design with a threaded connector interface. This connector style is commonly used in vacuum coating applications, particularly in the construction of crystal sensor deposition monitors. Crystal Sensor assemblies often utilize a BNC-Microdot ‘between series’ feedthrough, which is designed with a BNC connection on the air-side and a Microdot connection on the vacuum-side. Standard configurations available. Type N to SMA feedthroughs are typically used in Beam Position Monitor (BPM) applications. Single, double, and custom configurations are available.

Operating Conditions

The electrical and thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of 1 x 10-4 Torr maximum pressure. Temperature ratings for various mounting options may reduce the operating range of an assembly. All assemblies have a maximum thermal gradient of 25oC per minute and may be damaged if this limit is exceeded.

Microdot Grounded

Single/Double Ended: Single
Electrical Rating: Voltage: 500 Volts DC Current: 2 Amps
Thermal Rating:  Feedthrough: -200 to 450oC Air-side Connector: -65 to 165oC
Conductor:
Molybdenum
Impedance: 
Non-constant
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