HP Compaq Presario CQ43 Maintenance And Service Manual page 44

CAUTION:
Event
Walking across carpet
Walking across vinyl floor
Motions of bench worker
Removing DIPS from plastic tube
Removing DIPS from vinyl tray
Removing DIPS from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
36 Chapter 4 Removal and replacement procedures
A product can be degraded by as little as 700 V.
Typical electrostatic voltage levels
Relative humidity
10% 40%
35,000 V 15,000 V
12,000 V 5,000 V
6,000 V 800 V
2,000 V 700 V
11,500 V 4,000 V
14,500 V 5,000 V
26,500 V 20,000 V
21,000 V 11,000 V
55%
7,500 V
3,000 V
400 V
400 V
2,000 V
3,500 V
7,000 V
5,000 V