公开(公告)号：US3794517A

公开(公告)日：1974-02-26

申请号：US3794517D

申请日：1971-12-28

申请人： PHILIPS CORP

发明人： YPERMAN J ,  BELHOMME C

IPC分类号： C04B35/468 ,  C23C14/18 ,  H01B1/02 ,  H01B1/08 ,  H01C1/14 ,  H01C7/04 ,  H01C17/28 ,  H01L1/14

CPC分类号： C04B35/4682 ,  C23C14/18 ,  H01B1/02 ,  H01B1/08 ,  H01C1/1406 ,  H01C7/045 ,  H01C17/288 ,  Y10S428/929 ,  Y10T428/12528 ,  Y10T428/12611

摘要： A METHOD IS SHOWN FOR INCREASING THE STABILITY OF THE ELECTRICAL RESISTANCE OF N-TYPE SEMICONDUCTOR BODIES PROVIDED WITH OHMIC CONTACT ELECTRODES. THE METHOD COMPRISES FIRST VACUUM DEPOSITING CHROMIUM ON THE SEMICONDUCTOR BODY AND THEN VACUUM DEPOSITING A SOLDERABLE METAL ON THE CHROMIUM LAYER. THIS ABSTRACT IS IN NO WAY INTENDED TO BE A DESCRIPTION OF THE INVENTION DEFINED BY THE CLAIMS.

公开(公告)号：US3715701A

公开(公告)日：1973-02-06

申请号：US3715701D

申请日：1971-02-19

申请人： PHILIPS CORP

发明人： YPERMAN J ,  RAPAILLE J

IPC分类号： C04B35/46 ,  H01C7/115 ,  H01C7/10

CPC分类号： C04B35/46 ,  H01C7/115

摘要： A varistor whose ceramic body contains bismuth oxide and antimony oxide containing semiconducting titanium oxide having a relatively low C-value and a low Beta value.