Surface mount thin film fuse structure and method of manufacturing the same
First Claim
1. A surface mount thin film fuse structure, comprising:
- an insulating substrate, having a fusible fuse circuit structure disposed on at least one surface of the insulating substrate, and the fusible fuse circuit structure comprising two opposite electrode portions and a fusible link portion, wherein the fusible link portion is connected to the two opposite electrode portions, and at least one space is defined between the fusible link portion and the insulating substrate;
a protective layer, having the fusible link portion disposed thereon.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention discloses a surface mount thin film fuse structure including a fusible fuse circuit structure disposed on a side of an insulating substrate, and the fusible fuse circuit structure has a fusible link portion electrically connected between two opposite electrode portions. If an overload current is passed through the fusible link portion, the fusible link portion will be melted down by a high temperature or a specific temperature to achieve the over current protection effect. At least one space is defined between the fusible link portion and the insulating substrate, such that a heat generated by the electrically energized the fusible link portion will not be dissipated through the heat conduction of the insulating substrate to achieve the circuit protection effect.
48 Citations
20 Claims
-
1. A surface mount thin film fuse structure, comprising:
-
an insulating substrate, having a fusible fuse circuit structure disposed on at least one surface of the insulating substrate, and the fusible fuse circuit structure comprising two opposite electrode portions and a fusible link portion, wherein the fusible link portion is connected to the two opposite electrode portions, and at least one space is defined between the fusible link portion and the insulating substrate; a protective layer, having the fusible link portion disposed thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of manufacturing a surface mount thin film fuse structure, comprising the steps of:
-
(A) providing an insulating substrate; (B) installing a spacer layer on at least one surface of the insulating substrate and the spacer layer locating at a desired position for installing the fusible link portion; (C) installing a copper layer on a surface of the insulating substrate having the spacer layer and covering the whole surface of the insulating substrate with the copper layer; (D) coating a photoresist on the copper layer, and performing exposure, development and etching processes to form a fusible fuse circuit structure by the copper layer, wherein the fusible fuse circuit structure comprises two opposite electrode portions and a fusible link portion connected to the two opposite electrode portions; and (E) removing the spacer layer to define at least one space between the fusible link portion and the insulating substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification