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2CVV4,
6CVV4,
13CVV4
Mechan
ica1:
Operating
Position.
. .
Any
Maximum
Over-all
Length
0.8"
Maximum
Seated
Height
0.625
"
Maximum
Diameter.
0.440"
Envelope.
Metal
Shell
Base
.•
Medium
Ceramic-Wafer
Twelvar
5-Pin
(JEDEC
No.E5-65)
Maximum
Ratings,
Des1ln-Hax1mum
Values:
PLATE
SUPPLY~VOLTAGE.
300·
max.
volts
PLATE
VOLTAGE
.
135
max.
volts
GRID
VOLTAGE:
Negative-bias
value
55
max.
volts
Peak
positive
value
0
max.
volts
PLATE
DISSIPATION:
With a minimum
series
plate-circuit
resistance
of
5000 ohms.
1.5
max.
watts
For
lower
values
of
series
plate-circuit
resistance
See
Fig.l
and
Operating
Considerations
CATHODE
CURRENT
. . . . . . . . .
15
max.
ma
PEAK
HEATER-CATHODE
VOLTAGE:
Heater
negative
with
respect
to
cathode
100 max.
volts
Heater
positive
with
respect
to
cathode
100
max.
volts
Typical Operation:
Plate
Voltage
. .
70
volts
Grid
Supply
Voltage
o
volts
Grid
Resistor
. . . 47000
ohms
Amplification
Factor.
68
Plate
Resistance
(Approx.).
5440
ohms
Transconductance.
12500
f-lJ!lhos
Plate
Current
.
7.2
ma
Maximum
Circuit
Values:
Grid-Circuit
Resistance:·
For
fixed-bias
operation.
0.5
max.
megohm
For
cathode-bias
operation.
2.2
max.
megohms
• A
plate
supply
voltage
of
300
volts
may
be
used
provided
sufficient
plate-circuit
re-
sistance
and
agc
voltage
are
used
to
limit
the
voltage
at
the
plate
of
the
tube
to
135
volts
under
conditions
of
maximum
rated
plate
dissipation
(1.5
watts).
•
For
operation
at
metal-shell
temperatures
up
to
135
0
C.
OPERATING
CONSIDERATIONS
The
base
ptns
of
the
2CW4,
6CW4,
and
13CW4
fit
the
Cinch
Manufacturing
Co.
socket
No.133
65 10 001 and
the
Industrial
Electronic
Hardware
Co.
socket
Nos.Nu 5044 and
Nu
5060,
or
their
equivalents.
In
some
previous
publications
reference
has
been
made
to
a
JEDEC
No.E5-65
socket.
This
number
is
not
a
socket
designation
but
is
a
base
designation
which
defines
the
JEDEC Medium
Ceramic-Wafer
Twelvar
5-pin
base
used
in
nuvistor
tubes.
Use
of Plate-Dissipation Rating Chart
The
Plate-Dissipation
RatingChart
shown
in
Fig.l
presents
graphically
the
maximum
rated
plate
dissipation
of
the
2CW4,
6CW4,
and
13CW4
for
various
minimum
- 4 -
,
r
•
•
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