7.028 36
Gold 0.12 8.2 Gold
The finest surfaces are created with gold plating.023 43.7. Silver produces moderate diffusion
barrier.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.7.067 15
Nickel 0.1 Silver
The conductivity silver excellent, better than gold fact.
4. brownish
sulphide layer easily develops its surface.
4.3
.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.5
Silver 0.
This surface protection used for aggressive environments.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0. This
surface protection sufficient for almost all industrial connectors
applications.4 The Specific Resistance and Conductivity Various
Materials
Table 4.
4.4. This can be
very important, especially for small currents and low voltages.017 58
Brass (CuZn40) 0.5
Tin 0. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.5
Copper 0.016 61
Zinc 0. The contacts are silver-plated,
with layer thickness pm.061 16.7. The parts are immersed aqueous passivation emulsion.069 14. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area
