Diffusion Pieces
It is a piece of diffusion pieces,VRRM>1200V ,
Generally it is to point to by monocrystalline silicon wafer cut into slices,
has a diameter of 6 inches,
8 inches, 12 inches, etc,
the main production specifications for integrated circuits. Silicon wafer just raw material,
chip is finished products.
Semiconductor is conductive ability between a conductor and between insulators substance.
At present the most used is silicon, and early germanium, and the compound gallium arsenide, etc.
Diffusion Pieces