Data set 01
1958 Mullard Receiving Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Voltage
6.3 V
Heater Current
150 mA
MaximumOscillatorFrequency
500 MHz
Voltage - Triode (single high frequency) ·Triode
EC71
Subminiature medium-mu UHF triode for oscillator service to approximately 500 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- WIRE8
- Base pins
- 8
- Nominal heater
- 6.3 V / 150 mA
Description
Subminiature medium-mu UHF triode for oscillator service to about 500 MHz.
Socket description
Subminiature all-glass 8-wire lead family
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- WIRE8
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 150 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
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 4700 Ω
- Amplification factor
- 27
- Max plate voltage
- 165 V
- Max plate dissipation
- 3.3 W
- Max cathode current
- 22 mA
Published ratings and characteristics promoted from the supplied Brimar source.
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.
Data set 02
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
UHF/VHF oscillator or amplifier
Characteristics
Plate voltage characteristic
100 V
Plate current
8.5 mA
Plate resistance
4700 ohm
Amplification factor
27
Grid voltage
-1.3 V
Grid cutoff at 10uA
-7 V
Other
Plate voltage maximum
165 V
Plate dissipation maximum
3.3 W
Cathode current maximum
22 mA