Provided is a semiconductor device including: a normally-off transistor having a first electrode, a second electrode, and a first control electrode; a normally-on transistor having a third electrode electrically connected to the second electrode, a fourth electrode, and a second control electrode; a first capacitor having a first end and a second end electrically connected to the second control electrode; a Zener diode having a first anode and a first cathode, the first anode being electrically connected to the second end and the second control electrode, and the first cathode being electrically connected to the third electrode; a first resistor having a third end and a fourth end electrically connected to the first control electrode; a first diode having a second anode and a second cathode, the second anode being electrically connected to the third end; a second resistor having a fifth end electrically connected to the second cathode and a sixth end electrically connected to the fourth end and the first control electrode; a second diode having a third anode and a third cathode, the third anode being electrically connected to the second end, the first anode, and the second control electrode, and the third cathode being electrically connected to the first electrode; and a second capacitor having a seventh end and an eighth end, the seventh end being electrically connected to the fourth end, the sixth end, and the first control electrode, and the eighth end being electrically connected to the first electrode.