JPS55110062A - Semiconductor device - Google Patents
Semiconductor deviceInfo
- Publication number
- JPS55110062A JPS55110062A JP1616579A JP1616579A JPS55110062A JP S55110062 A JPS55110062 A JP S55110062A JP 1616579 A JP1616579 A JP 1616579A JP 1616579 A JP1616579 A JP 1616579A JP S55110062 A JPS55110062 A JP S55110062A
- Authority
- JP
- Japan
- Prior art keywords
- stem
- rough
- 100w200μm
- screwed
- semiconductor device
- 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 prevent damage at pellets when they are screwed by making the stem bottom surface rough.
CONSTITUTION: Copper heatsink 9 is fitted to the center hole of thick plate 2 made of iron or iron-nickel. The bottom of an ordinary stem having screw hole 1 is made rough by providing it with lattice-shaped grooves 10. The depth of the grooves is set at about 100W200μm and their width about 100W200μm. By this structure, when a semiconductor device is screwed to a heat discharge plate, the stress can be absorbed by the rough surface and reduced, so that the ares of the stem surface is increased and heat discharge characteristics are improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1616579A JPS55110062A (en) | 1979-02-16 | 1979-02-16 | Semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1616579A JPS55110062A (en) | 1979-02-16 | 1979-02-16 | Semiconductor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55110062A true JPS55110062A (en) | 1980-08-25 |
Family
ID=11908886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1616579A Pending JPS55110062A (en) | 1979-02-16 | 1979-02-16 | Semiconductor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55110062A (en) |
-
1979
- 1979-02-16 JP JP1616579A patent/JPS55110062A/en active Pending
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