Siemens ULTRAMAT 23 Series - ESD Directives and Guidelines

ESD directives
B
B.1 ESD guidelines
De󹪝nition of ESD
All electronic modules are equipped with large-scale integrated ICs or components. Due to their
design, these electronic elements are highly sensitive to overvoltage, and thus to any
electrostatic discharge.
The electrostatic sensitive components/modules are commonly referred to as ESD devices. This
is also the international abbreviation for such devices.
ESD modules are identi󹪝ed by the following symbol:
NOTICE
ESD devices can be destroyed by voltages well below the threshold of human perception. These
static voltages develop when you touch a component or electrical connection of a device
without having drained the static charges present on your body. The electrostatic discharge
current may lead to latent failure of a module, that is, this damage may not be signi󹪝cant
immediately, but in operation may cause malfunction.
Electrostatic charging
Anyone who is not connected to the electrical potential of their surroundings can be
electrostatically charged.
The 󹪝gure below shows the maximum electrostatic voltage which may build up on a person
coming into contact with the materials indicated. These values correspond to IEC 801-2
speci󹪝cations.
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 219