Surface mount type electronic component

A surface mount type electronic component comprising:

• a case substrate having a longitudinal direction and a width direction;
• an electronic element mounted on said case substrate along the longitudinal direction;
• and
• a cap fixed to said case substrate so as to cover said electronic element;
• wherein first and second top-surface electrodes and first and second bottom-surface electrodes, which extend along the width direction of the case substrate, are provided on the top surface and the bottom surface of said case substrate and spaced from one another, respectively,
• the first top-surface electrode and the first bottom-surface electrode are connected to each other via a first side electrode provided on a side surface of the case substrate, and the second top-surface electrode and the second bottom-surface electrode are connected to each other via a second side electrode provided on a side surface of the case substrate,
• said electronic element is electrically connected to the first and second top-surface electrodes, and
• a space d1 between the first and second top-surface electrodes differs from a space d2 between the first and second bottom-surface electrodes.