Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.023 43. The parts are immersed aqueous passivation emulsion.067 15
Nickel 0.3
.7. The contacts are silver-plated,
with layer thickness pm.016 61
Zinc 0.7.4 The Specific Resistance and Conductivity Various
Materials
Table 4.
4. This can be
very important, especially for small currents and low voltages.5
Silver 0. This
surface protection sufficient for almost all industrial connectors
applications.7.061 16.028 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.12 8.
4.
4. Silver produces moderate diffusion
barrier.
This surface protection used for aggressive environments.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.4. brownish
sulphide layer easily develops its surface.069 14. The electrical
conductivity gold significantly less than that silver, but due its
constant contact resistance, used special applications.017 58
Brass (CuZn40) 0.2 Gold
The finest surfaces are created with gold plating.7.1 Silver
The conductivity silver excellent, better than gold fact.5
Copper 0.5
Tin 0.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0
