The invention provides an electronic component and a manufacturing method thereof that can achieve an improved adhesion strength when the electronic component is solder-mounted onto an external substrate and can thereby obtain considerably improved electric properties and reliabilities, etc. An electronic component, which is a capacitor 1, has: a circuit element 5a formed on a substrate 2; an electrode layer 5b connected to the circuit element 5a; passivation layers 6 and 8 that cover the electrode layer 5b; and terminal electrodes 9a and 9b connected to the electrode layer 5b via via-conductors Va and Vb formed through the passivation layers 6 and 8, the terminal electrodes 9a and 9b being formed to cover the side wall of the passivation layers 6 and 8. Since the pad electrodes 9a and 9b are formed so as to cover the passivation layers 6 and 8 across their uppermost surfaces and side walls, the area of contact between the pad electrodes 9a and 9b and the solder for solder-mounting increases, and the capacitor 1 can consequently exhibit an improved adhesion strength.