The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area.5
Silver 0.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0.
This surface protection used for aggressive environments.028 36
Gold 0.2 Gold
The finest surfaces are created with gold plating.
4.12 8.5
Tin 0.3
.
4. This can be
very important, especially for small currents and low voltages. The contacts are silver-plated,
with layer thickness pm.7.7.023 43.4.067 15
Nickel 0. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.7. brownish
sulphide layer easily develops its surface.069 14.7.5
Copper 0.017 58
Brass (CuZn40) 0. The parts are immersed aqueous passivation emulsion.4 The Specific Resistance and Conductivity Various
Materials
Table 4. This
surface protection sufficient for almost all industrial connectors
applications. Silver produces moderate diffusion
barrier.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.1 Silver
The conductivity silver excellent, better than gold fact.061 16.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.016 61
Zinc 0.
4
