| 摘要 |
An acceleration sensor is able to reduce the mount space thereof and to prevent detection precision from being lowered by yawing when external force is applied. The acceleration sensor reduces the mount space by attaching a circuit substrate so as to extend perpendicularly to a mounting substrate, and prevents detection precision from being lowered by yawing of the circuit substrate by setting the acceleration detecting direction of an acceleration detecting device mounted on the circuit substrate parallel to the main surfaces of both the mounting substrate and the circuit substrate.
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