The contacts are silver-plated,
with layer thickness pm.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0. brownish
sulphide layer easily develops its surface. This can be
very important, especially for small currents and low voltages. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area.016 61
Zinc 0.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.7.028 36
Gold 0.4 The Specific Resistance and Conductivity Various
Materials
Table 4.7. This
surface protection sufficient for almost all industrial connectors
applications.
4.1 Silver
The conductivity silver excellent, better than gold fact.023 43.
This surface protection used for aggressive environments.12 8.3
.7.
4.5
Silver 0.017 58
Brass (CuZn40) 0. The parts are immersed aqueous passivation emulsion.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.5
Tin 0.2 Gold
The finest surfaces are created with gold plating. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.
4.069 14.4.061 16.067 15
Nickel 0. Silver produces moderate diffusion
barrier.5
Copper 0.7
