JPS5385177A - Base diffusion type semiconductor device and its production - Google Patents
Base diffusion type semiconductor device and its productionInfo
- Publication number
- JPS5385177A JPS5385177A JP4577A JP4577A JPS5385177A JP S5385177 A JPS5385177 A JP S5385177A JP 4577 A JP4577 A JP 4577A JP 4577 A JP4577 A JP 4577A JP S5385177 A JPS5385177 A JP S5385177A
- Authority
- JP
- Japan
- Prior art keywords
- production
- semiconductor device
- type semiconductor
- diffusion type
- base diffusion
- 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
- Bipolar Transistors (AREA)
Abstract
PURPOSE: To prevent the current concentration on the surface of a diffused base region and lower production cost by forming an annular form current cut-off groove of a suitable depth encircling the outside of an emitter region in part of the surface of the diffused base region.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4577A JPS5385177A (en) | 1977-01-05 | 1977-01-05 | Base diffusion type semiconductor device and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4577A JPS5385177A (en) | 1977-01-05 | 1977-01-05 | Base diffusion type semiconductor device and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5385177A true JPS5385177A (en) | 1978-07-27 |
Family
ID=11463303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4577A Pending JPS5385177A (en) | 1977-01-05 | 1977-01-05 | Base diffusion type semiconductor device and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5385177A (en) |
-
1977
- 1977-01-05 JP JP4577A patent/JPS5385177A/en active Pending
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