Data set 01
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum average anode current
70 mA
Maximum input power
70 W
Tested anode dissipation
75 W
Power - Triode ·Triode
TA140
RF power transmitting triode for amplifier, oscillator, communications, broadcast, or industrial high-frequency generator service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 10 V / 5.5 A
Description
TA140 is a directly heated transmitting triode for amateur and military rf service. The supplied Philips datasheet was read for filament data, limiting ratings, characteristic constants, operating classes, cooling requirements, and interelectrode capacitances where published.
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
- 10 V
- Nominal heater current
- 5.5 A
- 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
- Transconductance
- 0.002 S
- Amplification factor
- 12
- Max plate voltage
- 1000 V
- Max plate dissipation
- 50 W
- Max cathode current
- 70 mA
Directly heated transmitting triode for amateur and military RF service
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.