Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater Warmup Time
11 s
PlateInputMaximum
2.5 W
OscillatorService
Plate Voltage
100 V
OscillatorService
Voltage - Triode (single high frequency) ·Triode
2AF4B
Improved miniature UHF triode for television-tuner oscillator and amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 2.35 V / 600 mA
Description
Improved miniature UHF triode for television tuner oscillator and amplifier service.
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
- 2.35 V
- Nominal heater current
- 600 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
- 2270 Ω
- Transconductance
- 0.0066 S
- Amplification factor
- 15
- Max plate voltage
- 150 V
- Max plate dissipation
- 2.05 W
- Max cathode current
- 28 mA
Promoted from clearly identified published ratings/characteristics; additional operating points, capacitances, flyback limits, battery-service values, and application-specific data are retained in TUBE_SECTION_PARAMETER.
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
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
150 V
UHFOscillator
Plate current
20 mA
UHFOscillator
Application
Improved UHF television oscillator/amplifier
Section1
Characteristic
Plate resistance
2000 Ω
Section1
Transconductance
6800 µS
Section1
Amplification factor
14
Section1