A composite electronic component includes a capacitor structure including a dielectric layer, and a first internal electrode and a second internal electrode alternately arranged in a first direction, with the dielectric layer interposed therebetween; a fuse structure including a fuse and a fuse body; a common electrode disposed between one surface of the capacitor structure in a second direction, crossing the first direction, and one surface of the fuse structure in the second direction, and connected to the first internal electrode and the fuse; a first external electrode disposed on the other surface of the fuse structure in the second direction, and connected to the fuse; and a second external electrode disposed on the other surface of the capacitor structure in the second direction, and connected to the second internal electrode.

A composite electronic component includes a capacitor structure including a dielectric layer, and a first internal electrode and a second internal electrode alternately arranged in a first direction, with the dielectric layer interposed therebetween; a fuse structure including a fuse and a fuse body; a common electrode disposed between one surface of the capacitor structure in a second direction, crossing the first direction, and one surface of the fuse structure in the second direction, and connected to the first internal electrode and the fuse; a first external electrode disposed on the other surface of the fuse structure in the second direction, and connected to the fuse; and a second external electrode disposed on the other surface of the capacitor structure in the second direction, and connected to the second internal electrode.

Disclosed herein is a capacitor component that includes a lower electrode, a capacitive insulating film covering the lower electrode, a plurality of upper electrodes overlapping the lower electrode through the capacitive insulating film, a first external terminal connected to the lower electrode, a plurality of fuse wires connected respectively to the plurality of upper electrodes, and a second external terminal connected in common to the plurality of fuse wires. The resistance values of the plurality of respective fuse wires are higher than the resistance values of the plurality of corresponding upper electrodes.

Disclosed herein is a capacitor component that includes a lower electrode, a capacitive insulating film covering the lower electrode, a plurality of upper electrodes overlapping the lower electrode through the capacitive insulating film, a first external terminal connected to the lower electrode, a plurality of fuse wires connected respectively to the plurality of upper electrodes, and a second external terminal connected in common to the plurality of fuse wires. The resistance values of the plurality of respective fuse wires are higher than the resistance values of the plurality of corresponding upper electrodes.

A diagnostic device diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit.

A diagnostic device diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit.

A composite electronic component includes a capacitor structure including a dielectric layer, and a first internal electrode and a second internal electrode alternately arranged in a first direction, with the dielectric layer interposed therebetween; a fuse structure including a fuse and a fuse body; a common electrode disposed between one surface of the capacitor structure in a second direction, crossing the first direction, and one surface of the fuse structure in the second direction, and connected to the first internal electrode and the fuse; a first external electrode disposed on the other surface of the fuse structure in the second direction, and connected to the fuse; and a second external electrode disposed on the other surface of the capacitor structure in the second direction, and connected to the second internal electrode.

A composite electronic component includes a capacitor structure including a dielectric layer, and a first internal electrode and a second internal electrode alternately arranged in a first direction, with the dielectric layer interposed therebetween; a fuse structure including a fuse and a fuse body; a common electrode disposed between one surface of the capacitor structure in a second direction, crossing the first direction, and one surface of the fuse structure in the second direction, and connected to the first internal electrode and the fuse; a first external electrode disposed on the other surface of the fuse structure in the second direction, and connected to the fuse; and a second external electrode disposed on the other surface of the capacitor structure in the second direction, and connected to the second internal electrode.

An electronic device that includes an intermediate connection layer interposed between a wiring substrate with a pair of land electrodes and an electronic component. The intermediate connection layer has first and second connection electrodes formed on the surface of a base. A fuse part is formed inside the second connection electrode between a main conductor part thereof opposed to a first external electrode of the electronic component and a main conductor part of the first connection electrode opposed to a second external electrode of the electronic component.

An electronic device that includes an intermediate connection layer interposed between a wiring substrate with a pair of land electrodes and an electronic component. The intermediate connection layer has first and second connection electrodes formed on the surface of a base. A fuse part is formed inside the second connection electrode between a main conductor part thereof opposed to a first external electrode of the electronic component and a main conductor part of the first connection electrode opposed to a second external electrode of the electronic component.