Method for calibrating an ultrasonic bonding machine

A method for calibrating a second bonding machine based on a calibrated first bonding machine, the first bonding machine comprising a first ultrasonic transducer, a first bonding tool, a first pressing device, and a first support, the second bonding machine comprising a second ultrasonic transducer and a power supply, the method comprising:

• damping the first ultrasonic transducer by a first mechanical damping, the first mechanical damping including disposing a damping device on a surface of the first support and using the first pressing device to press the first bonding tool against the damping device;
• providing a first electrical calibration supply to the first ultrasonic transducer, the first electrical calibration supply causing the first ultrasonic transducer, when it is damped by the first mechanical damping, to oscillate at a first calibration amplitude;
• providing a second electrical calibration supply to the second ultrasonic transducer, wherein the second electrical calibration supply is configured to cause the second ultrasonic transducer, when it is damped by a second mechanical damping identical to the first mechanical damping, to oscillate at a second calibration amplitude identical to the first calibration amplitude;
• and
• adapting the second bonding machine to:
• modify a second control signal based on a first electrical parameter of the first electrical calibration supply and on a second electrical parameter of the second electrical calibration supply in order to generate a modified second control signal;
• provide the modified second control signal to the power supply in order to cause the power supply to generate a second electrical supply;
• and
• provide the second electrical supply to the second ultrasonic transducer.