The document discusses electrostatic discharge and its risks. It explains that a static charge builds up from certain materials rubbing together, like clothes or one item against another. This charge can damage electronic components through sparks or discharges. Anyone working with electronics must wear a wristband and use a grounded mat to safely dissipate any static charge and prevent damage.

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Electrostatic DischargeElectrostatic Discharge
Electro-
Static
Discharge
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Electrostatic DischargeElectrostatic Discharge
You may notice it as a spark:
 from your finger to the door frame when you get out of
the car
 from your finger to any earthed metalwork - e.g.
copier
 when stroking a cat
Electro-
Static
Discharge

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Electrostatic DischargeElectrostatic Discharge
Causes:
 Charge builds up when certain
materials rub together
 e.g. between your body and your clothes, and
between one item and another
 man-made fibres (e.g. Nylon) are worse than cotton
 Damp air is slightly conductive, so the
charge leaks away
 Dry air is an insulator, so the charge
builds up

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Electrostatic DischargeElectrostatic Discharge
 Electronic components have tiny
elements, so they are VERY easily
damaged by electrical discharges.
 Damage can occur even when there
isn’t a spark.

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Electrostatic DischargeElectrostatic Discharge
 NEVER touch electronic components or
printed circuit boards.
 NEVER open boxes or bags which have
the ESD warning sign.
 Anyone who needs to touch or work
with electronic components MUST use
an approved safety wristband
and
an earthed work-mat.

6. 5
Electrostatic DischargeElectrostatic Discharge
 NEVER touch electronic components or
printed circuit boards.
 NEVER open boxes or bags which have
the ESD warning sign.
 Anyone who needs to touch or work
with electronic components MUST use
an approved safety wristband
and
an earthed work-mat.