Tektronix DM501A - Page 55

8
Avoid
handling
components in
areas that have
a floor
or
work surface
covering
capable
of generating
a
static charge.
9. Use a
soldering
iron that is
connected
to earth
ground.
10.
Use
only
special
antistatic
suction
type or wick
type
desoldering
tools.
Test
Equipment
Before
using any
test
equipment
to
make mea-
surements
on
static-sensitive
components
or assemblies,
be certain
that any
voltage
or
current
supplied
by
the
test
equipment
does not
exceed
the limits
of
the
component
to
be tested.
Table
5-1
RELATIVE SUSCEPTIBILITY TO
STATIC DISCHARGE DAMAGE
Semiconductor Classes
Relative
Susceptibility
Levels’
MOS or
CMOS microcircuits or
discretes,
or
linear
microcirucils
with MOS inputs (Most
Sensiiive) 1
ECL
2
Schottky signal diodes
3
Schottky TTL
4
High-frequency
bipolar transistors
5
JFETs
6
Linear
microciicuits
7
Low-power
Schottey TTL
8
TTL
(Leas! Si'nsitive:
9
“Voltage
equivalent for
levels:
1-100
to 500
V 4
-
500 V
7
"
'lOO
to vDO V (cst.)
2 200 to 500 V
5
=
400
to 600 V 8
900 V
3 250
V
6
600 to 800 V
9 1200
V
(Voltage
discharged from
a
100
pT i
apeciici
itir .-gi.
a
resist;
, me
of
100 ohms.)