Power amplifier circuit, power amplifier device, and rf circuit module

A power amplifier device comprising:

• a first member including a first circuit;
• a second member including a second circuit;
• and
• a member-to-member connection conductor configured to electrically connect the first circuit and the second circuit to each other, wherein
• the second member is mounted on the first member,
• the second circuit includes
• an amplifier transistor having a base to which a radio frequency signal is to be supplied and configured to amplify the radio frequency signal and output the amplified radio frequency signal, and
• a resistance element having a first end, and a second end electrically connected to the base of the amplifier transistor, and
• the first circuit includes
• a first bias transistor having a collector to which a first voltage is to be applied, a base to which a first bias voltage is to be applied, and an emitter electrically connected to the first end of the resistance element and configured to supply a bias current to the base of the amplifier transistor through the resistance element, and
• a second bias transistor having an emitter electrically connected to the emitter of the first bias transistor and the first end of the resistance element, a base to which a second bias voltage is to be applied, and a collector to which a second voltage lower than the first voltage is to be applied.