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
400 mA
Voltage - Triode (single high frequency) ·Triode
EC90
High-frequency power triode for FM circuits and Class-C RF amplifier service to approximately 150 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 400 mA
Description
High-frequency power triode for FM circuits and Class-C RF amplifier service to about 150 MHz.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 400 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
- 7700 Ω
- Transconductance
- 0.00325 S
- Amplification factor
- 19.5
- Max plate voltage
- 300 V
- Max plate dissipation
- 5 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
1961 Ferranti Technical Handbook
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
HF power amplifier
Other
Class-C RF output approximate
5.5 W
ClassC
Maximum intended frequency
150 MHz
Data set 03
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Typical anode voltage
250 V
Characteristic
Typical transconductance
2200 µS
Va=250V