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Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0.7. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.016 61
Zinc 0.028 36
Gold 0.069 14.067 15
Nickel 0. The contacts are silver-plated,
with layer thickness pm.1 Silver
The conductivity silver excellent, better than gold fact.023 43.4.7.
4.061 16. This can be
very important, especially for small currents and low voltages.3
.
4. Silver produces moderate diffusion
barrier.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.4 The Specific Resistance and Conductivity Various
Materials
Table 4. brownish
sulphide layer easily develops its surface. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area. The parts are immersed aqueous passivation emulsion.2 Gold
The finest surfaces are created with gold plating.
This surface protection used for aggressive environments.7. This
surface protection sufficient for almost all industrial connectors
applications.12 8.7.017 58
Brass (CuZn40) 0.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.5
Silver 0.5
Copper 0.
4.5
Tin 0
