JPS5591149A - Semiconductor element - Google Patents
Semiconductor elementInfo
- Publication number
- JPS5591149A JPS5591149A JP16338378A JP16338378A JPS5591149A JP S5591149 A JPS5591149 A JP S5591149A JP 16338378 A JP16338378 A JP 16338378A JP 16338378 A JP16338378 A JP 16338378A JP S5591149 A JPS5591149 A JP S5591149A
- Authority
- JP
- Japan
- Prior art keywords
- withstand voltage
- junction
- exposed surface
- semiconductor element
- silicone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
Abstract
PURPOSE: To prevent a semiconductor element from deteriorating its withstand voltage due to ageing and thermal cycle by coating the exposed surface of a pn-junction thereof with a mixture of silicone varnish and silicone rubber to maintain thereby its initial withstand voltage.
CONSTITUTION: A mixture of silicone varnish and silicone rubber at a ratio of 1:1 by weight is coated on the exposed surface of a pn-junction in a semiconductor element. That is, after a solution mixed at this ratio is agitated in an agitating bottle for longer than one daylight and night, the solution is coated on the exposed surface of the pn-junction and heat treated at approx. 240°C for longer than 10 hours. Thus, its withstand voltage is not deteriorated by both thermal cycle test and voltage application test, but retains its initial withstand voltage. Further, the same result can be obtained by employing another hard polyester resin instead of the silicone varnish.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16338378A JPS5591149A (en) | 1978-12-27 | 1978-12-27 | Semiconductor element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16338378A JPS5591149A (en) | 1978-12-27 | 1978-12-27 | Semiconductor element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5591149A true JPS5591149A (en) | 1980-07-10 |
Family
ID=15772835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16338378A Pending JPS5591149A (en) | 1978-12-27 | 1978-12-27 | Semiconductor element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5591149A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10359144B2 (en) | 2016-10-25 | 2019-07-23 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing vacuum insulation panel and intermediate product |
-
1978
- 1978-12-27 JP JP16338378A patent/JPS5591149A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10359144B2 (en) | 2016-10-25 | 2019-07-23 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing vacuum insulation panel and intermediate product |
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