ST7-EPB
Appendix B Safety Requirements
UM0028 Rev 4
13/15
Appendix B
Safety Requirements
●
Any tester, equipment, or tool used at any production step, or for any manipulation of
semiconductor devices, must 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
M
Ω
/cm
2
)
, grounded through a ground cable
(conductive cable from protected equipment to
ground isolated with a 1 M
Ω
resistor placed in series)
. All manipulation of finished
goods
goods must be done at such a grounded worktable.
●
The worktable
must be 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 M
Ω
) 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, 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.
www.st.com
