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Staticsensitive Components
r Z x . 7
8. Avoid handling components i n areas that have
a
floor or work-surface covering capable of generating a
static charge.
Static
discharge
can
damage any
semiconductor
component in
this instrument.
9. Use
a soldering iron that
is
connected
to earth
ground.
This instrument contains electrical components that
are
susceptible to damage from static discharge.
See
10. Use only special antistatic
suction type or wick
Table 5-1 for relative susceptibility of various classes of
type desoldering tools.
semiconductors. Static voltages of
1 kV to 30
kV are
common
in
unprotected environments.
Observe the following precautions t o avoid damage:
RELATIVE
SCJSCEPTlBlLlTY TO
STATIC DISCHARGE DAMAGE
1, Minimize handling of static-sensitive components.
I
Relative
2. Transport and store static-sensitive components or
Semiconductor Classes
3. Discharge the static voltage from
your body by
wearing
a
wrist strap while handling these components.
Servicing staticsensitive assemblies or components
should be performed on1
y
at a static-free work station by
qualified service personnel.
Level sa
on conductive
foam.
Label any package that contains
or discretes, or linear
static-sensitive assemblies or components.
microcircuits with MOS
inputs.
(Most Sensitive)
4. Nothing capable of generating or holding
a
static
charge should be allowed on the work station surface.
assemblies i n their original containers, on
a
metal rail, or
1
5.
Keep the component leads shorted together
whenever possible.
8. Pick up components bythe body,
never by
the reads.
7. Do
not slide the components over
any
surface.
ECL
Schottky signal diodes
*voltage equivalent
for
levels:
1
= 3 0 0 t o
5 0 0 V
4 = 5 0 0 V
?=4(rOto $000 V (est.]
2
=
200
to
500 V
5
=
400
to 600 Y
8
=
900 V
3
=
250 Y
6=600fo800V
9 = 1200V
(Voltage discharged from a 100 pF capacitor through
a
reslstance
of
100
ohms.)
2
3
- -
Schottky TTL
Hig h-frequency bipolar transistors
JFETs
Linear
microcircuits
Low-power Schottky T T t
4
5
-
6
7
8
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