Electrical Classification and Common Usage of Materials

3.3.4 Electrical Tabulated Classification and common usage of materials



GROUP
NAME
RESISTIVITY
COMMON USE
Conductors
Silver
1.63 x 10-8
Contacts
Copper
1.72 x 10-8
Cables
Gold
2.20 x 10-8
Contacts and integrated circuits
Aluminium
2.67 x lO-8
Power line cables
Brass
8 x 10-8
Terminals
Semi-conductors
Carbon
4 x 10-5
Machine brushes
Silicon
1 x 10-2
Most semi-conductor devices
Germanium
46 x 10-2
Transistors diodes
Gallium
1.7 X 10-1
Light emitting diodes
Insulators
Porcelain
1 X 109
Line support insulators
PVC
1 x 107
Cable insulators
Rubber
1 x 106
Cable insulators
Mica
5 x 1014
Heating element insulator
Polyester
1 x 1011
Capacitor dielectrics
Glass
1 x 107
Power line insulators

No comments:

Post a Comment