| 摘要 |
PROBLEM TO BE SOLVED: To provide a component mounting board capable of enabling a positive continuity between a screw head and a copper foil land. SOLUTION: In the component mounting board 10, the copper foil land 2 identical to those in a conventional technique is provided around fixing holes 1 provided at least four corners, and solder regions 3 being protruding ridge shape are formed in the land 2. The solder regions 3 are formed during a step of cream solder printing on the pads on a surface mounting component, and cream solder is adhered on the solder regions 3. After completing the step of cream solder printing, the board is subjected to a reflow step to heat the surface of the board, thereby the cream solder on the solder regions 3 swells so as to form a protruding ridge shape by surface tension of the cream solder. When the screw is tightened, the screw head presses and crashes the solder regions 3, and a contact area between the screw head and the solder regions 3 is increased, and thus, the screw head electrically contacts the solder regions 3 positively. In this way, variations in voltage of a GND layer of the board 10, and operations of circuits on the board 10 can be stabilized.
|
