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Corrective Maintenance
Maintenance
6Ć6
CAUTION
Static discharge can damage any semiconductor component in this
instrument. Follow the precautions in this section to prevent damĆ
age.
This instrument contains electrical components that are susceptible to
damage from static discharge. See Table 6Ć1 for the relative susceptibility of
various classes of semiconductors. Static voltages of 1 kV to 30 kV are
common in unprotected environments.
TableĂ6Ć1:ăRelative Susceptibility to Damage from Static Discharge
Semiconductor Classes
Relative
Susceptibility
Levels
1
MOS or CMOS microcircuits, and discrete or linear
microcircuits with MOS inputs (most sensitive)
100 V to 500 V
ECL 200 V to 500 V
Schottky signal diodes 250 V
Schottky TTL 500 V
HighĆfrequency bipolar transistors 400 V to 600 V
JFETs 600 V to 800 V
Linear microcircuits 400 V to 1000 V
(est.)
LowĆpower Schottky TTL 900 V
TTL (least sensitive) 1200 V
!Voltage discharged from a 100 pF capacitor through a resistance of 100 W.
StaticĆSensitive
Device Classification