The contacts are silver-plated,
with layer thickness pm.067 15
Nickel 0.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.069 14. Silver produces moderate diffusion
barrier.2 Gold
The finest surfaces are created with gold plating.5
Copper 0.
4.7. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications. This
surface protection sufficient for almost all industrial connectors
applications. brownish
sulphide layer easily develops its surface.4.061 16.12 8.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0.7.7.3
.016 61
Zinc 0. This can be
very important, especially for small currents and low voltages.
This surface protection used for aggressive environments. The parts are immersed aqueous passivation emulsion.1 Silver
The conductivity silver excellent, better than gold fact.4 The Specific Resistance and Conductivity Various
Materials
Table 4.023 43.7.5
Silver 0.028 36
Gold 0. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area.
4.5
Tin 0.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.017 58
Brass (CuZn40) 0.
4
