Pressure sensor capsule with improved isolation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 21, 2003
Grant Date -
N/A
app pub date -
Jan 6, 2000
filing date -
Jan 6, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A pressure sensor capsule with a beam shaped sensor body, made of direct bonded layers of single crystal sapphire, surrounding a hollow central channel. A first beam end receives pressure and a second beam end has electrical contact pads and there is a mounting surface between the ends. The central channel has a narrower width passing through the mounting surface. An isolation plate is brazed to the mounting surface. Pressure sensing film is in the first end with leads extending through the channel to the electrical contact pads. The beam having a notch at the second end, forming an isolated lead surface on the central channel where the electrical contact pads are accessible.
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