Abstract: A frame device includes a back board, a buckle member and a casing. The back board has a groove. The buckle member is disposed on the back board, and has a first part member and the second part member disposed corresponding to the groove, and a distance between the first part member and the second part member varies along a direction. The casing is provided with a hook having a first engaging part and a second engaging part, and a distance between the first engaging part and the second engaging part varies along the direction. The first part member is engaged with the first engaging part, and the second part member is engaged with the second engaging part.

Abstract: A passive device includes a substrate that has opposite first and second surfaces, an electrical connecting unit, a first passive unit, and a second passive unit. The electrical connecting unit includes a first pad formed on the first surface and a second pad formed on the second surface and is electrically connected to the first pad. The first passive unit is formed on the first surface and electrically connected to the first pad. The second passive unit is formed on the second surface and includes two separated electrode layers electrically insulated from the electrical connecting unit, and an insulator layer interconnecting the electrode layers.

Abstract: The disclosure provides a chip resistor including: a substrate, two first electrodes, two second electrodes, a resistive layer, at least one protection layer and at least one coating layer. The protection layer covers part of the two first electrodes, and includes at least two overlay sides and at least one overlay plane. The coating layer covers the at least two overlay sides, the at least one overlay plane, and part of the two first electrodes and the two second electrodes. The chip resistor uses the two overlay sides and the overplay plane to extend a distance between the two first electrodes and the outside. Therefore, it is difficult for the airborne sulfur, sulfides and sulfur-containing compounds to enter and react with the two first electrodes. Thus, the chip resistor can resist corrosion of harmful substances such as sulfur, sulfides and sulfur-containing compounds or halogens on the electrodes.

Abstract: The disclosure provides a chip resistor including: a substrate, two first electrodes, two second electrodes, a resistive layer, at least one protection layer and at least one coating layer. The protection layer covers part of the two first electrodes, and includes at least two overlay sides and at least one overlay plane. The coating layer covers the at least two overlay sides, the at least one overlay plane, and part of the two first electrodes and the two second electrodes. The chip resistor uses the two overlay sides and the overplay plane to extend a distance between the two first electrodes and the outside. Therefore, it is difficult for the airborne sulfur, sulfides and sulfur-containing compounds to enter and react with the two first electrodes. Thus, the chip resistor can resist corrosion of harmful substances such as sulfur, sulfides and sulfur-containing compounds or halogens on the electrodes.