Printed boards and printed board assemblies - Design and use - Part 5-6: Attachment (land/joint) considerations - Chip carriers with J-leads on four sides
印刷电路板和印刷电路板组件 - 设计和使用 - 第5-6部分:附件(陆地/接头)注意事项 - 四面线引脚的芯片运营商
Provides information on land pattern geometries used for the surface attachment of electronic components with J leads on four sides.
Provides the appropriate size, shape and tolerances of surface mount land patterns so as to ensure sufficient area for the appropriate solder fillet, and also allows for inspection, testing and reworking of resulting solder joints.