3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistorsand
semiconductor"chip" components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
whichshouldbe removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alminum
foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, alminum foil or
comparableconductivematerial).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient
todamagean ES device).
6
TH-32LHD7UY / TH-32LHD7UXK / TH-32LHD7UXS / TH-32LHD7EK / TH-32LHD7ES / TH-32LHD7BK / TH-32LHD7BS
Summary of Contents for TH-32LHD7BK
Page 30: ...30 TH 32LHD7UY TH 32LHD7UXK TH 32LHD7UXS TH 32LHD7EK TH 32LHD7ES TH 32LHD7BK TH 32LHD7BS ...
Page 31: ...31 TH 32LHD7UY TH 32LHD7UXK TH 32LHD7UXS TH 32LHD7EK TH 32LHD7ES TH 32LHD7BK TH 32LHD7BS ...
Page 32: ...32 TH 32LHD7UY TH 32LHD7UXK TH 32LHD7UXS TH 32LHD7EK TH 32LHD7ES TH 32LHD7BK TH 32LHD7BS ...
Page 76: ...TH 32LHD7UY TH 32LHD7UXK TH 32LHD7UXS TH 32LHD7EK TH 32LHD7ES TH 32LHD7BK TH 32LHD7BS 76 ...
