JPS554919A - Method of form solder film on perforrated base material - Google Patents
Method of form solder film on perforrated base materialInfo
- Publication number
- JPS554919A JPS554919A JP7647478A JP7647478A JPS554919A JP S554919 A JPS554919 A JP S554919A JP 7647478 A JP7647478 A JP 7647478A JP 7647478 A JP7647478 A JP 7647478A JP S554919 A JPS554919 A JP S554919A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- base material
- hole
- solder
- solder film
- 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.)
- Granted
Links
Landscapes
- Lead Frames For Integrated Circuits (AREA)
Abstract
PURPOSE: To prevent solder from forming film inside a hole by providing a perforated base material, prior to being dipped in a soldering tank, with a slit so that it becomes an open structure.
CONSTITUTION: A hole 2 is provided with a slit 3 so that it becomes an open structure. A width D of the slit 3 may well be 0.5 mm or more. As a lead frame 1 having been cleaned is dipped into a soldering tank and pulled out, solder film is not formed inside the hole due to unblanced concentration of surface tension of solder owing to the slit, and the solder film is formed on other part than the inside of the hole.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7647478A JPS554919A (en) | 1978-06-26 | 1978-06-26 | Method of form solder film on perforrated base material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7647478A JPS554919A (en) | 1978-06-26 | 1978-06-26 | Method of form solder film on perforrated base material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS554919A true JPS554919A (en) | 1980-01-14 |
JPS6227546B2 JPS6227546B2 (en) | 1987-06-15 |
Family
ID=13606169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7647478A Granted JPS554919A (en) | 1978-06-26 | 1978-06-26 | Method of form solder film on perforrated base material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554919A (en) |
-
1978
- 1978-06-26 JP JP7647478A patent/JPS554919A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6227546B2 (en) | 1987-06-15 |
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