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
EC70
Subminiature UHF triode primarily for oscillator service around 500 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- WIRE8
- Base pins
- 8
- Nominal heater
- 6.3 V / 150 mA
Description
Subminiature UHF triode primarily for oscillator service around 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
- 3600 Ω
- Transconductance
- 0.0055 S
- Amplification factor
- 20
- Max plate voltage
- 175 V
- Max plate dissipation
- 0.75 W
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 characteristic
20 mA
Transconductance
5.5 mA/V
Amplification factor
20
Plate resistance
36000 ohm
Other
Oscillator supply voltage
175 V
Oscillator plate current
20 mA
Oscillator RF output power
0.75 W
Oscillator frequency
500 MHz