Composite circuit protection device
AssigneeFuzetec Technology Co., Ltd.
InventorsJack Jih-Sang Chen, Chang-Hung Jiang
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Abstract
A composite circuit protection device includes a transistor, a positive temperature coefficient (PTC) component, a first lead pin, a second lead pin and a third lead pin. The transistor includes a drain electrode, a gate electrode and a source electrode. The PTC component includes a first electrode, a second electrode, and a PTC matrix disposed between the first electrode and the second electrode. The second electrode is in contact with the gate electrode of the transistor. The first lead pin is bonded to the drain electrode of the transistor. The second lead pin is bonded to one of the first electrode and the second electrode of the PTC component. The third lead pin is bonded to the source electrode of the transistor.
Claims15
A composite circuit protection device, comprising:
- a transistor that includes a drain electrode, a gate electrode, and a source electrode;
- a positive temperature coefficient (PTC) component that includes a first electrode, a second electrode and a PTC matrix disposed between said first electrode and said second electrode, said second electrode being in contact with said gate electrode of said transistor;
- a first lead pin that is bonded to said drain electrode of said transistor;
- a second lead pin that is bonded to one of said first electrode and said second electrode of said PTC component;
- and
- a third lead pin that is bonded to said source electrode of said transistor;
- wherein said PTC component has a rated voltage that ranges between 250% and 350% of a maximum gate-source voltage of said transistor.
Dependencies are inferred from the claim text.