Electroacoustic transducer and electronic equipment using the same

摘要

The present invention provides an electroacoustic transducer which realizes an optimum characteristic thereof utilizing heat caused by reflow soldering without being influenced by the same heat. The electroacoustic transducer includes a magnetic driving portion (10) composed of a base (20), a core (22) provided upright on the base (20) and a coil (24) wound around the core (22), wherein a height (L1) of the coil (24) at the manufacturing time is set lower by a height which corresponds to thermal expansion of the coil in reflow soldering, and a projection length of the core (22) exposed from the coil (24) at the manufacturing time is set larger by the height which corresponds to thermal expansion of the coil in reflow soldering.