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Date Posted by Category User IP

2014-09-16 (UTC)

LZ1QU

Tubes

84-238-180-200.ip.btc-net.bg

For sale 6C33C tubes

Lot of 4 tubes 6C33C
Russian/Soviet (USSR) .
NOS tubes, made in USSR, items are
new, old stock.
They consist of two triodes (A and
B) in the same glass envelope.
Cathodes, grids and plates are
internally connected in parallel.
The filaments are lead out
separately for each triode.
Name
6C33C-В
Type
Output triode
Application
LFpower amplification
Cathode type
&oxide,indirect heating
Envelope:
Hard glass casing
Mass:
<200 g
Height:
<130 mm
Diameter:
< 65 mm
Base Septar7
Pin Electrode
1 Heater Filament A
- 1
2 Heater Filament A
- 2
3 Cathode
4 Plate
5 Grid
6 Heater Filament B
- 1
7 Heater Filament B
2
TYPICAL OPERATING DATA:
FILAMENT CURRENT
Serial heater connection filament
voltage 12,6V (3,3 ± 0,3) A
Parallel heater connection
filament voltage 6,3V (6,6 ± 0,6)
A
TYPICAL OPERATION
Plate voltage 120 V
Cathode resistor for cathode bias
35 Ohms
Warm-up time to steady state > 600
s1
Plate current (550± 80) mA2
1 - Warm-up time to 90%
emission < 120 s.
2 - Older versions and
6C33C/6S33S (540 ± 90) mA.
ABSOLUTE MAXIMUM RATINGS:
Exceeding these ratings will cause
permanent damage and/or premature
failure of the valve. The circuit
design has to assure that these
absolute maximum ratings are not
exceeded under any circumstances
(worst case component tolerances
and aging, environmental conditions
and mains voltage deviations).
FILAMENT VOLTAGE:
Serial connection of heater
filaments (11.3 ... 13.9) V
Parallel connection of heater
filaments (5.7 ... 6.9) V
PLATE VOLTAGE:
Dissipation > 30 W
250V
Dissipation < 30 W
450V
Zero Current at power-up
600 V
NEGATIVE GRID VOLTAGE
(0.5..-150) V
GRID CIRCUIT RESISTANCE
200 kOhm
VOLTAGE BETWEEN CATHODE AND HEATER
± 300 V
ENVELOPE TEMPERATURE (J):
Ambient J = 20° C
260 °C
Ambient J = 100° C
300 °C
Ambient J = 150° C
320 °C
PLATE CURRENT:
One triode operating
350 mA
Both triodes operating
600 mA
PLATE DISSIPATION:
One triode operating
45 W
Price:30$ each tube+shipping
PAY PAL
Thanks for looking my post

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