On the importance of anti-static protection for crystal oscillator | Xtalong
Electrostatic discharge can easily damage the active crystal oscillator (crystal oscillator)
including the chip and cause abnormal operation. If the electrostatic voltage is too high,
the electrode, conductive adhesive and chip of the crystal resonator may be damaged
and completely invalid, and it may also bring hidden dangers of instability to the
clock signal in the oscillation circuit.
The common anti-static ways of crystal oscillator are "grounding" and "isolation",
which are explained as follows:
Grounding mode
Due to the contact and friction between the human body and various objects,
it is easy to carry static electricity. When we contact the crystal oscillator,
it is easy to cause static electricity damage to the crystal oscillator. In fact,
most of the static electricity damage of crystal oscillator is caused by human static electricity.
In the process of crystal oscillator assembly, transmission, test, transportation and storage,
due to the friction between the shell and other materials, the shell will have static electricity.
When the shell with static electricity is grounded, it will discharge to the ground through the core and pins (pads).
Therefore, the most effective anti-static measure is to let your hand often directly touch the arrester to discharge
or to discharge at any time by wearing an anti-static corded wrist strap.
Isolation mode
Use anti-static packaging during storage or transportation to isolate from charged objects or
charged electrostatic fields to prevent electrostatic discharge damage.
Finally, it should be pointed out that the machine will also carry static electricity due to friction or induction,
and the charged machine will also cause varying degrees of damage to
the crystal oscillator by discharging through the crystal oscillator.
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