The 3CX3000A7 and 3CX3000F7 are forced air-cooled metal-ceramic triodes with a thoriated-tungsten cathode. Its anode dissipation is 4kW. It’s intended for use as a RF power amplifier, oscillator or modulator. The 3CX3000F7 is used in lower frequency applications, and its grid and cathode leads are connected to the tube base.
Specifications:
Filament Voltage……7. 5V
Filament Current
3CX3000A7……………… 51.5A
3CX3000F7……………… 50.5A
Amplification Factor (average)……160
Interelectrode Capacitances (Grounded-cathode)
Input……38.1pF Feedback……0.6pF Output……24Pf
Mounting……Upright
Cooling……forced air
Diameter……105.56mm
Weight……3.4kg
Temperature at anode shell and seals……250℃
Maximum ratings:
(RF power amplifier or modulator, class AB2, grid-driven, single tube)
Anode Voltage…… 5000V
Anode Current……2.5Adc
Grid Dissipation……225W
Anode Dissipation……4000W
Typical conditions
Dual tubes, unless specified otherwise, sine wave
Anode Voltage……4000Vdc
Zero Signal Anode Current……0.5Adc
Peak Signal Anode Current……3.58Adc
Anode Resistance……2720Ω
Input Grid Voltage (single)……190V
Peak Driving Power……115W
Anode Dissipation……1850W
Signal Anode Output Power……10.5kW
