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US 11,875,925 B2Granted
Thermistor, varistor or capacitor component with a fusible connecting element between the main body of the component
AssigneeTDK Electronics Co., Ltd.
InventorsAlfred Hofrichter, Franz Rinner
Life of this patent
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Abstract
An electrical component comprises a main body and at least one external electrode that is fastened by a connecting material to the main body. The main body and the external electrode have different coefficients of thermal expansion that determine a critical temperature which, when exceeded, results in a connection between the main body and the external electrode experiencing mechanical stresses that lead to damage to the component. The connecting material has a melting point which is lower than a critical temperature.
Claims19
A component comprising:
- a main body and at least one external electrode that is fastened by a connecting material to the main body, the main body and the external electrode have different coefficients of thermal expansion that determine a critical temperature which, when exceeded, results in a connection between the main body and the external electrode experiencing mechanical stresses that lead to damaging to the component,
- wherein the connecting material has a melting point that is lower than the critical temperature, and
- wherein the main body and the at least one external electrode are pressed against one another by a prestressing unit.
A component comprising:
- a main body having a surface with a main-body electrode thereon, the main body being made of a material having a first coefficient of the thermal expansion;
- an external electrode positioned away from the main body, the external electrode being made of a material having a second coefficient of the thermal expansion that is different from the first coefficient of thermal expansion;
- and
- a connecting material located between and making contract with the main-body electrode and the external electrode, the connecting material having a melting point that is below at least some of the operational temperatures of the component such that the connecting material changes from a solid state to a liquid state to relieve the mechanical stresses from the different coefficients of thermal expansion of the main body and the external electrode, the connecting material maintaining electrical connection between the main-body electrode and the external electrode when in both the liquid state and the solid state,
- wherein the main body and the external electrode are pressed against one another by a prestressing unit.
2 more elements
Dependencies are inferred from the claim text.