5
Tin 0.067 15
Nickel 0.7.028 36
Gold 0.5
Silver 0. Silver produces moderate diffusion
barrier.069 14.3 Nickel
A 5-pm layer nickel applied protect large-surface parts, such earth
panels.21:
176 ____________________________________________________________
Material Specific resistance Conductivity in
Ohm mm2 m
in Ohm mm2
Aluminium 0.
4. The brass contacts are first
plated with 3-pm nickel layer (diffusion barrier) then with 2-pm gold
layer the contact area.12 8.
4.1 Silver
The conductivity silver excellent, better than gold fact.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. The contacts are silver-plated,
with layer thickness pm.
This surface protection used for aggressive environments.7.
Due the thinness the layer, the poor electrical conductivity nickel is
insignificant.4. This
surface protection sufficient for almost all industrial connectors
applications.5
Copper 0.023 43. This can be
very important, especially for small currents and low voltages. The parts are immersed aqueous passivation emulsion.061 16.
4.016 61
Zinc 0.7.4 The Specific Resistance and Conductivity Various
Materials
Table 4.7.3
. brownish
sulphide layer easily develops its surface.017 58
Brass (CuZn40) 0
