a microcircuit of a powerful darlington transistor on a cut scribed semiconductor silicon multilayer wafer

silicon wafer semiconductor transistor chip epitaxial structure powerful bipolar darlington composite integral scheme one microcircuit aluminum metallization cut germanium gallium arsenide nitride oxide 300 microns grey 100 fragile expensive clean junction multilayer protection granite table gray background closeup focus stacking crystal plate amplification current voltage frequency breakdown top view isolate white isolated scribed package