Maintenance

Susceptibility to ESD Table 6±1 lists the relative susceptibility of various classes of semiconductors. Static voltages of 1 kV to 30 kV are common in unprotected environments.

Table 6-1: Relative susceptibility to static/discharge damage

Semiconductor classes

Relative susceptibility levels1

MOS or CMOS microcircuits or discrete circuits, or linear

1

microcircuits with MOS inputs ￿most sensitive￿

 

 

 

ECL

2

 

 

Schottky signal diodes

3

 

 

Schottky TTL

4

 

 

High/frequency bipolar transistors

5

 

 

JFET

6

 

 

Linear microcircuits

7

 

 

Low/power Schottky TTL

8

 

 

TTL ￿least sensitive￿

9

 

 

1Voltage equivalent for levels (voltage discharged from a 100.pF capacitor through

resistance of 100 ohms￿:

 

 

1.=.100 to 500

V

6

= 600 to 800 V

2

= 200 to 500

V

7

= 400 to 1000 V (est.)

3

= 250 V

 

8

= 900 V

4

= 500 V

 

9

= 1200 V

5

= 400 to 600 V

 

 

AWG710 Service Manual

6-3