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ST7SB Socket Board User Guide Appendix A Safety Requirements
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APPENDIX A SAFETY REQUIREMENTS
• Any tester, equipment, or tool used at any production step, or for any
manipulation of semiconductor devices, have its shield connected to ground.
• The product must be placed on a conductive table top, made of steel or clean
aluminum, or covered by an antistatic surface (superficial resistivity equal to or
higher than 0.5 MΩ/cm
2
), grounded through a ground cable (conductive cable
from protected equipment to ground isolated with a 1 MΩ resistor placed in
series). All manipulation of finished goods must be done at such a grounded
worktable.
• The worktable free of all non-antistatic plastic objects.
• An antistatic floor covering grounded through a conductive ground cable (with
serial resistor between 0.9 and 1.5 MΩ) should be used.
• It is recommended that you wear an antistatic wrist or ankle strap, connected to
the antistatic floor covering or to the grounded equipment.
• If no antistatic wrist or ankle strap is worn, before each manipulation of the
powered-on tool, you touch the surface of the grounded worktable.
• It is recommended that antistatic gloves or finger coats be worn.
• It is recommended that nylon clothing be avoided while performing any
manipulation of parts.