Copper conducts electricity and heat very well.
Taking advantage of these characteristics, copper is used for components of various home electric appliances.
For example…
Air Conditioners
Pipes/heat exchanger, fan transistor & MOS array, etc.
TVs
Coils (deflection yoke), printed circuit board, power supply IC, etc.
DVD Players
Compact switching power supply IC, motor driver IC, hall IC, etc.
Audio
Output transistor, power rectifier diode, and LED
Laptops
Printed circuit board, surface mount/low consumption current/low output voltage regulator IC, etc.
Cellular Phones
Printed circuit board, copper wires, hall IC, and secondary rectifier SBD
Game Devices
Surface mount/low consumption current/low output voltage regulator IC, battery reverse connection preventing SBD, etc.
Digital Cameras
Printed circuit board and battery reverse connection preventing diode