Data set 01
1959 Telefunken
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Cutoff characteristic
Remote cutoff
Voltage Pentode - Remote Cutoff (single) ·Pentode
EF8010
Long-life high-slope remote-cutoff RF pentode for professional gain-controlled communications amplifiers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 200 mA
Description
Long-life high-slope remote-cutoff RF pentode.
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
- 200 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
- Transconductance
- 0.0087 S
Published Telefunken values promoted where applicable; additional values retained as parameters.
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.