JPS6228784Y2 - - Google Patents
Info
- Publication number
- JPS6228784Y2 JPS6228784Y2 JP10840081U JP10840081U JPS6228784Y2 JP S6228784 Y2 JPS6228784 Y2 JP S6228784Y2 JP 10840081 U JP10840081 U JP 10840081U JP 10840081 U JP10840081 U JP 10840081U JP S6228784 Y2 JPS6228784 Y2 JP S6228784Y2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- thickness
- lead frame
- copper
- coating
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000010960 cold rolled steel Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 239000010410 layer Substances 0.000 description 10
- 238000004080 punching Methods 0.000 description 9
- 239000011247 coating layer Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 208000031439 Striae Distensae Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Lead Frames For Integrated Circuits (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10840081U JPS5812957U (ja) | 1981-07-20 | 1981-07-20 | リ−ドフレ−ム用材料 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10840081U JPS5812957U (ja) | 1981-07-20 | 1981-07-20 | リ−ドフレ−ム用材料 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5812957U JPS5812957U (ja) | 1983-01-27 |
| JPS6228784Y2 true JPS6228784Y2 (enrdf_load_stackoverflow) | 1987-07-23 |
Family
ID=29902807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10840081U Granted JPS5812957U (ja) | 1981-07-20 | 1981-07-20 | リ−ドフレ−ム用材料 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5812957U (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61102687U (enrdf_load_stackoverflow) * | 1984-12-12 | 1986-06-30 | ||
| JPH0561219U (ja) * | 1992-01-28 | 1993-08-13 | 功 尾形 | 側壁勾配違い水路 |
-
1981
- 1981-07-20 JP JP10840081U patent/JPS5812957U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5812957U (ja) | 1983-01-27 |
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