Data set 01
1963 Siemens
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
6.3 V
Heater current
400 mA
Characteristics
Transconductance
6500 µS
Nominal/Bogey
Amplification factor
19
Nominal/Bogey
Voltage Pentode ·Pentode
C3O
Long-life professional pentode developed for both RF and audio-frequency amplification in continuously operated equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater
- 6.3 V / 400 mA
Description
Long-life pentode for RF and AF amplification.
Socket description
Loctal 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 400 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 250000 Ω
- Transconductance
- 0.0065 S
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 4 W
- Max screen dissipation
- 1 W
- Max grid dissipation
- 0.05 W
- Max cathode current
- 30 mA
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.