Data set 01
1963 Siemens
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Typical Plate Voltage
250 V
Typical Plate Current
10 mA
Voltage - Dual Triode (similar) ·Triode-Triode
E81CC
Special-quality dual triode with separate cathodes intended for amplifier, pulse, and control applications requiring professional-grade performance.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
Dual triode with separate cathodes for amplifier and pulse/control applications.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 300 mA
- Series capable
- Yes
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 10900 Ω
- Transconductance
- 0.0055 S
- Amplification factor
- 60
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.8 W
- Max grid dissipation
- 0.1 W
- Max cathode current
- 18 mA
Representative row for electrically identical repeated section.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 10900 Ω
- Transconductance
- 0.0055 S
- Amplification factor
- 60
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.8 W
- Max grid dissipation
- 0.1 W
- Max cathode current
- 18 mA
Second physical triode section; added to align rows with SectionCount.
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.