Emerson N400C Manuel D’Utilisation

Removal and Replacement Preliminaries

Maintenance and Service Guide

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Nonconductive plastic bags, tubes, or boxes

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Metal tote boxes

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Electrostatic voltage levels and protective materials

Table 4-1 shows how humidity affects the electrostatic voltage 
levels generated by different activities.

Table 4-2 lists the shielding protection provided by antistatic bags 
and floor mats.

Walking across carpet

35,000 V

15,000 V

7,500 V

Walking across vinyl floor

12,000 V

 5,000 V

3,000 V

Motions of bench worker

6,000 V

800 V

400 V

Removing DIPS from plastic tube

2,000 V

700 V

400 V

Removing DIPS from vinyl tray

11,500 V

4,000 V

2,000 V

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

✎

A product can be degraded by as little as 700 V.

Antistatic plastic

Bags

1,500 V

Carbon-loaded plastic

Floor mats

7,500 V

Metallized laminate

Floor mats

5,000 V