Table 6 1: Relative Susceptibility To Static Discharge Damage - Tektronix TAS 465 Service Manual

TAS 465 Service Manual
3. Do not remove the oscilloscope cabinet unless you have met precaution
number 2, above. Consider all internal modules static sensitive.
4. Remove anything capable of generating or holding a static charge from
the work station surface.
5. Do not slide the modules over any surface.
6. Do not use high velocity compressed air when cleaning dust from
modules.
Table 6 1 lists the relative susceptibility of various classes of semiconduc
tors. Static voltages of 1 kV to 30 kV are common in unprotected environ
ments.

Table 6 1: Relative Susceptibility to Static Discharge Damage

Semiconductor Classes
MOS or CMOS microcircuits or discrete circuits, or lin
ear microcircuits with MOS inputs (most sensitive)
ECL
Schottky signal diodes
Schottky TTL
High frequency bipolar transistors
JFET
Linear microcircuits
Low power Schottky TTL
TTL (least sensitive)
1
Voltage equivalent for levels (voltage discharged from a 100 pF capacitor through resis
:
tance of 100 ohms)
1 = 100 to 500 V
2 = 200 to 500 V
3 = 250 V
4 = 500 V
5 = 400 to 600 V
Maintenance Information
6 = 600 to 800 V
7 = 400 to 1000 V (est.)
8 = 900 V
9 = 1200 V
Relative
Susceptibility
1
Levels
1
2
3
4
5
6
7
8
9
6 3