JPS5694763A - Manufacturing method of transistor - Google Patents
Manufacturing method of transistorInfo
- Publication number
- JPS5694763A JPS5694763A JP17117779A JP17117779A JPS5694763A JP S5694763 A JPS5694763 A JP S5694763A JP 17117779 A JP17117779 A JP 17117779A JP 17117779 A JP17117779 A JP 17117779A JP S5694763 A JPS5694763 A JP S5694763A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- transistor
- package material
- plane
- leads
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
- H01L23/49541—Geometry of the lead-frame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Lead Frames For Integrated Circuits (AREA)
Abstract
PURPOSE:To enable an automatic direction selection as well as to easily make a supply to a package material and a picking out from the package material by a method wherein a projection length of a lead in mutually opposite directions is set to be different in cutting off of the lead of a transistor. CONSTITUTION:A transistor wherein two of three leads are arranged in parallel and protrude from one plane of a sealing outer shell 1 and one lead protrudes from a plane opposed to this plane is cut off from a frame 5 at the point indicated by a dotted line. And then, the cut-off of the lead is performed so that a protruding length L1' of the 1st lead 2 may be larger than a protruding length L2' of the 2nd and 3rd leads 3, 4. And thereafter, this transistor is placed on a parts feeder and based on the difference of the L1' and the L2', a direction selection is automatically performed, and as a result, a containing to a magazine is easily performed. Namely, through this, an automation of a supply to the package material and picking-out from the package material can be easily performed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17117779A JPS5694763A (en) | 1979-12-28 | 1979-12-28 | Manufacturing method of transistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17117779A JPS5694763A (en) | 1979-12-28 | 1979-12-28 | Manufacturing method of transistor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5694763A true JPS5694763A (en) | 1981-07-31 |
Family
ID=15918419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17117779A Pending JPS5694763A (en) | 1979-12-28 | 1979-12-28 | Manufacturing method of transistor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5694763A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4556896A (en) * | 1982-08-30 | 1985-12-03 | International Rectifier Corporation | Lead frame structure |
US5760467A (en) * | 1991-09-19 | 1998-06-02 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device lead frame having sunk die pad portions |
-
1979
- 1979-12-28 JP JP17117779A patent/JPS5694763A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4556896A (en) * | 1982-08-30 | 1985-12-03 | International Rectifier Corporation | Lead frame structure |
US5760467A (en) * | 1991-09-19 | 1998-06-02 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device lead frame having sunk die pad portions |
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