Liquid discharge apparatus

A liquid discharge apparatus comprising:

• a discharge head that includes a piezoelectric element and discharges a liquid by driving the piezoelectric element;
• and
• a driving signal output circuit that outputs a driving signal for driving the piezoelectric element, wherein
• the driving signal output circuit includes
• an integrated circuit that outputs a first control signal and a second control signal,
• a first transistor to which the first control signal is input,
• a second transistor to which the second control signal is input,
• a coil that has one end electrically coupled to the first transistor and the second transistor, and the other end electrically coupled to the discharge head, and
• a substrate,
• the integrated circuit, the first transistor, the second transistor, and the coil are provided on the substrate,
• the first transistor is a surface-mount type flat non-lead package, and in the first transistor, change in whether or not a second terminal and a third terminal are electrically coupled to each other is made according to the first control signal input to a first terminal,
• the second transistor is a surface-mount type flat non-lead package, and in second transistor, change in whether or not a fifth terminal and a sixth terminal are electrically coupled to each other is made according to the second control signal input to a fourth terminal,
• the coil is electrically coupled to the second terminal and the sixth terminal,
• an area of a first contact portion where the first terminal is in contact with the substrate is smaller than that of a second contact portion where the second terminal is in contact with the substrate,
• the area of the second contact portion where the second terminal is in contact with the substrate is smaller than that of a third contact portion where the third terminal is in contact with the substrate,
• an area of a fourth contact portion where the fourth terminal is in contact with the substrate is smaller than that of a fifth contact portion where the fifth terminal is in contact with the substrate, and
• the area of the fifth contact portion where the fifth terminal is in contact with the substrate is smaller than that of a sixth contact portion where the sixth terminal is in contact with the substrate.