The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.
This surface protection used for aggressive environments.4 The Specific Resistance and Conductivity Various
Materials
Table 4. brownish
sulphide layer easily develops its surface. The parts are immersed aqueous passivation emulsion.
4.061 16.069 14.023 43.7. This
surface protection sufficient for almost all industrial connectors
applications.3
.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels. Silver produces moderate diffusion
barrier.5
Tin 0.017 58
Brass (CuZn40) 0.12 8.067 15
Nickel 0. This can be
very important, especially for small currents and low voltages.
4.5
Silver 0.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.028 36
Gold 0.4.
4. The contacts are silver-plated,
with layer thickness pm.5
Copper 0.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0.016 61
Zinc 0.7.7. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area.2 Gold
The finest surfaces are created with gold plating.7.1 Silver
The conductivity silver excellent, better than gold fact
