Patent ID: 11917757
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. A circuit board comprising:
a substrate including an insulating material;
a plurality of mounting electrodes; and
a protective layer; wherein
the substrate includes:
a first section and a second section each including a first principal surface, positions of the first principal surfaces of the first and second sections being different in a thickness direction; and
a step surface provided by a difference between the position of the first principal surface of the first section and the position of the first principal surface of the second section in the thickness direction and exposed toward the first principal surface of the first section;

the plurality of mounting electrodes include a group of mounting electrodes to mount a component;
the group of mounting electrodes is provided on the first principal surface of the first section and correspond to an arrangement of terminals of the component;
the protective layer is disposed over the first principal surface of the first section, the step surface, and the first principal surface of the second section;
for two mounting electrodes of the group of mounting electrodes, a separation distance between one of the two mounting electrodes nearer the step surface and the step surface is greater than or equal to a distance between the two mounting electrodes;
the separation distance has a length greater than or equal to a height of the step surface;
the step surface includes a first step surface and a second step surface lower than the first step surface; and
a separation distance from the first step surface is greater than a separation distance from the second step surface.