PROTECTION ELEMENT AND METHOD FOR PRODUCING PROTECTION ELEMENT

Title:

PROTECTION ELEMENT AND METHOD FOR PRODUCING PROTECTION ELEMENT

Document Type and Number:

WIPO Patent Application WO/2011/158851

Kind Code:

A1

Abstract:

Provided is a protection element which can rapidly and reliably block a current path, using a corrosion phenomenon caused by molten solder. Electrodes (114) are comprised of a first conductive layer (112) stacked on a substrate (111), and second conductive layers (113) stacked at positions in the planar direction on the substrate (111) having the first conductive layer (112) stacked thereon. Solder paste (116) having greater wettability with the electrodes (114) than with the substrate (111) is deposited over the substrate (111) having the first conductive layer (112) and the second conductive layer (113) stacked thereon, and is melted by at least either heat generated by a resistor (103) or heat generated by the stacked portion composed of each electrode (114) and the solder paste (116). Thus, the molten solder paste (116) is drawn toward each electrode (114), the wettability of which is higher than that of the substrate (111), while corroding portions of the first conductive layer (112) which are exposed between the adjacent electrodes (114), and thus, a current path is blocked.

Inventors:

YONEDA YOSHIHIRO (JP)

Application Number:

PCT/JP2011/063648

Publication Date:

December 22, 2011

Filing Date:

June 15, 2011

Export Citation:

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Assignee:

SONY CHEM & INF DEVICE CORP (JP)
YONEDA YOSHIHIRO (JP)

International Classes:

H01H37/76

Foreign References:

JP2004079306A	2004-03-11
JP2001043781A	2001-02-16
JPH0393122A	1991-04-18
JP2010135806A	2010-06-15
JPH09223854A	1997-08-26

Other References: