Removal and Replacement Preliminaries
Maintenance and Service Guide 4–7
Table 4-2 lists the shielding protection provided by antistatic bags
and floor mats.
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
Table 4-1
Typical Electrostatic Voltage Levels
(Continued)
Relative Humidity
Event 10% 40% 55%
✎
A product can be degraded by as little as 700 V.
Table 4-2
Static-Shielding Materials
Material Use Voltage Protection Level
Antistatic plastic Bags 1,500 V
Carbon-loaded plastic Floor mats 7,500 V
Metallized laminate Floor mats 5,000 V
