Data set 01
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
RFPowerOutput
22 W
Power - Triode ·Triode
8025A
High-frequency transmitting power triode for VHF/UHF RF amplification. Manufacturer data permit full-input operation to about 500 MHz with appropriate cooling, making it a specialized high-frequency power device.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- SMALL4
- Base pins
- 4
- Nominal heater
- 6.3 V / 1.9 A
Description
The RCA 8025A is a thoriated-tungsten RF power triode with filament mid-tap, usable at full input to 500 MHz with forced-air or natural-cooling ratings.
Socket description
Small 4-contact transmitting-tube base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- SMALL4
- Base pins
- 4
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 1.9 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
- Amplification factor
- 18
- Max plate voltage
- 1000 V
- Max plate dissipation
- 40 W
Published ratings and characteristics promoted from the approved RCA 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
1950 General Electric Transmitting Types
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum full-rating frequency
500 MHz
Construction
Cooling method
Forced air
Data set 03
1956 RCA Transmitting Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Maximum Full-Input Frequency
500 MHz
Reduced-Rating Frequency
600 MHz
Other
Plate Dissipation Forced-Air CCS
40 W
ForcedAirCooling
Plate Dissipation Natural ICAS
30 W
NaturalCooling