Global Patent Index - EP 0806780 B1

EP 0806780 B1 2000-08-02 - Zinc phosphate coating for varistor and method

Title (en)

Zinc phosphate coating for varistor and method

Title (de)

Zink-Phosphatbeschichtung für Varistor und Verfahren zur Herstellung

Title (fr)

Revêtement en phosphate de zinc pour varistor et méthode de fabrication

Publication

EP 0806780 B1 (EN)

Application

EP 96400993 A

Priority

EP 96400993 A

Abstract (en)

[origin: EP0806780A1] A method of providing a semiconductor device (20) with an inorganic electrically insulative layer (34) the device having exposed semiconductor surfaces (34) and electrically conductive metal end terminations (30) in which the device is reacted with phosphoric acid to form a phosphate on the exposed surfaces (34) of the semiconductor but not on the metal end terminations (30), and in which the device is thereafter barrel plated in a conventional electrical barrel plating process and the plating is provided only on the end terminations (30) because the phosphate is not electrically conductive. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01C 1/034; H01C 7/10

IPC 8 full level (invention and additional information)

H01C 1/034 (2006.01); H01C 7/102 (2006.01)

CPC (invention and additional information)

H01C 7/102 (2013.01); H01C 1/034 (2013.01)

Designated contracting state (EPC)

AT BE NL

EPO simple patent family

EP 0806780 A1 19971112; EP 0806780 B1 20000802; AT 195198 T 20000815

INPADOC legal status


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2000-08-02 [REF] CORRESPONDS TO:

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1999-04-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

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