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US 12,424,357 B2Granted
PTC heater with reduced switch-on current
AssigneeTDK Electronics Co., Ltd.
InventorsBernhard Steinberger, Jiri Brezina, Michal Geprt, Zdenek Sita
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Abstract
A positive temperature coefficient (PTC) heater is disclosed. In an embodiment the PTC heater includes a main body having a length L, a width B, and a height H made of a PTC material and a first electrode and a second electrode made of an electrically conductive material, wherein the following is true for L, B, and H: L≥B≥H, and wherein the electrodes are connected to the main body so that the following is true for a spacing d thereof from one another: d>H.
Claims18
A positive temperature coefficient (PTC) heater comprising:
- a main body having a length L, a width B, and a height H made of a PTC material;
- a first electrode and a second electrode made of an electrically conductive material,
- wherein the following is true for L, B, and H:
- L≥B≥H,
- wherein the electrodes are connected to the main body so that the following is true for a spacing d thereof from one another:
- d>H;
- and
- a dielectric layer arranged on a lateral surface of the main body,
- wherein the main body has a shape of a cuboid,
- wherein the electrodes are arranged at opposing end surfaces of the main body,
- wherein the dielectric layer covers an area of the main body, which is free of the electrodes,
- wherein the dielectric layer is not arranged between the electrodes and the main body, and
- wherein the electrodes are arranged at the opposing end surfaces, the end surfaces having a distance of length L from each other.
10 more elements
A positive temperature coefficient (PTC) heater comprising:
- a main body having a length L, a width B, and a height H made of a PTC material;
- a first electrode and a second electrode made of an electrically conductive material,
- wherein the following is true for L, B, and H:
- L≥B≥H,
- wherein the electrodes are connected to the main body so that the following is true for a spacing d thereof from one another:
- d>H;
- a dielectric layer arranged on a lateral surface of the main body;
- and
- a carrier,
- wherein the main body has a shape of a cuboid,
- wherein the electrodes are arranged at opposing end surfaces of the main body,
- wherein the dielectric layer covers an area of the main body, which is free of the electrodes,
- wherein the dielectric layer is not arranged between the electrodes and the main body, and
- wherein the main body and the electrodes are arranged on a top surface of the carrier.
11 more elements
Dependencies are inferred from the claim text.