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2 Safety instructions
2.1 Electrostatic discharge
Dentsply Sirona
Operating Instructions DAC Universal
14
6681006 D3708
D3708.201.01.01.02 04.2019
The transient currents resulting from these discharges have a
magnitude of over 10 amps. They are not hazardous for humans
because they last for only several nanoseconds.
Note: nanosecond = 1/1,000,000,000 second = 1 billionth of a second
Voltage differentials exceeding 30,000 volts per centimeter may lead to
a charge transfer (electrostatic discharge, lightning, spark-over).
Integrated circuits (logical circuits and microprocessors) are used in
order to implement a wide variety of functions in a device. The circuits
must be miniaturized to a very high degree in order to include as many
functions as possible on these chips. This leads to structure thicknesses
as low as a few ten thousandths of a millimeter. Integrated circuits that
are connected to wires leading externally are therefore particularly at
risk from electrostatic discharge.
Even voltages that are imperceptible to the user can cause spark-over
of the layers. The resulting discharge current melts the chip in the
affected areas. Damage to individual integrated circuits may cause
malfunction or failure of the unit.
Содержание DAC Universal Touch
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