| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed board for mounting a component with lead terminals to be arranged in at least two rows with a narrow pitch, that transmits differential signals at low cost and with a simple configuration and has low noise and has no problem in radiation noise. SOLUTION: The printed board has: lead terminals (n) of a lead terminal row 1 on a direction side where a pattern is led out from multiple rows of dip type components; lead terminals (m) of a lead terminal row 2 adjacent thereto; a pattern 1 connected to the lands for the lead terminals (n); and a pattern 2 connected to the lands for the lead terminals (m). The lands for the lead terminals (n) are removed, thereby wiring the pattern 2 to the outside of the dip terminals from the lands for the lead terminal (m) through between the lead terminals (n) and the lead terminals (n+1) or (n-1), and leading out the paired wirings of the pattern 1 and 2 on the same solder surface and in the same direction. COPYRIGHT: (C)2009,JPO&INPIT
|
