Data set 01
1959 Telefunken
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
HeaterOrFilamentVoltage
4 V
HeaterOrFilamentCurrent
70 mA
Other
SpaceChargeGridVoltageMaximum
20 V
Voltage Pentode or Tetrode (under 100V) ·Tetrode
RE074D
Directly heated space-charge-grid double-grid tube for very-low-anode-voltage detector and AF-amplifier service in portable battery receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 4 V / 70 mA
Description
Directly heated space-charge-grid double-grid tube for very-low-anode-voltage detector and AF-amplifier service in portable battery receivers.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 4 V
- Nominal heater current
- 70 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
Tetrode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0008 S
- Amplification factor
- 4.5
- Max plate voltage
- 20 V
Published ratings and characteristics promoted from the supplied Telefunken source where explicitly readable.
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.