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US 2002/0000565 A1Published application
Surface breakdown bidirectional breakover protection component
OwnerJean-Michel Simmonetinventor
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Abstract
The present invention relates to a bidirectional breakover component including a lightly-doped N-type substrate, an upper P-type region extending over practically the entire upper surface of the component except its circumference, a lower P-type uniform layer on the lower surface side of the component, substantially complementary N-type regions respectively formed in the upper region and in the lower layer, a peripheral P-type well, an overdoped P-type region at the upper surface of the well, and lightly-doped N-type regions between the circumference of the upper region and the well.
Claims3
A bidirectional breakover component, including:
- a very lightly-doped N-type substrate;
- an upper P-type region extending over practically an entire upper surface of the component except its circumference;
- a lower P-type uniform layer on a lower surface side of the component;
- substantially complementary N-type regions respectively formed in the upper region and in the lower layer;
- a peripheral P-type well;
- an overdoped P-type region at an upper surface of the well;
- and
- lightly-doped N-type regions between the circumference of the upper region and the well.
5 more elements
Dependencies are inferred from the claim text.