JPS5571043A - Semiconductor device - Google Patents
Semiconductor deviceInfo
- Publication number
- JPS5571043A JPS5571043A JP14420178A JP14420178A JPS5571043A JP S5571043 A JPS5571043 A JP S5571043A JP 14420178 A JP14420178 A JP 14420178A JP 14420178 A JP14420178 A JP 14420178A JP S5571043 A JPS5571043 A JP S5571043A
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- stem
- insulating coating
- metallic substrate
- transistor
- 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
Abstract
PURPOSE: To simplify working process and to curtail cost by a method wherein an insulating coating film is formed at least on one principal face of a metallic substrate and inside of a lead hole, and a stem is fixed on the metallic substrate by way of the coating film for combination of a semiconductor device with a radiation substrate.
CONSTITUTION: An insulating coating film 11 60μm thick for example is formed on one principal face of a plank zone 5 of a radiation metallic substrate and inside of a lead hole by applying polyimide-isoindolo-quinazolinedione resin in paste. Then at the time of assembling transistor, a mica plate is disused, a stem of the transistor is placed directly on the surface of the radiation metallic substrate whereat the insulating coating film 11 is formed, and the stem lead is inserted in a lead hole to assembling. In this case, the surface of the insulating coating film 11 or the lower surface of the transistor stem is greased and clamped with screws.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14420178A JPS5571043A (en) | 1978-11-24 | 1978-11-24 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14420178A JPS5571043A (en) | 1978-11-24 | 1978-11-24 | Semiconductor device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5571043A true JPS5571043A (en) | 1980-05-28 |
Family
ID=15356562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14420178A Pending JPS5571043A (en) | 1978-11-24 | 1978-11-24 | Semiconductor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571043A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58140189A (en) * | 1982-02-15 | 1983-08-19 | 三菱電機株式会社 | Heat sink |
JP2010067924A (en) * | 2008-09-12 | 2010-03-25 | Hitachi Koki Co Ltd | Semiconductor device and battery charger |
-
1978
- 1978-11-24 JP JP14420178A patent/JPS5571043A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58140189A (en) * | 1982-02-15 | 1983-08-19 | 三菱電機株式会社 | Heat sink |
JP2010067924A (en) * | 2008-09-12 | 2010-03-25 | Hitachi Koki Co Ltd | Semiconductor device and battery charger |
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