TY61250A

Forced-air-cooled RF power triode for transmitting applications around 50 MHz. Approximately 1.3 kW plate dissipation and 7 kV capability support several kilowatts of professional RF output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 65 A

Description

Forced-air-cooled RF power triode rated for about 4.1 kW output at 50 MHz.

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: 6.3 V
Nominal heater current: 65 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: 0.007 S
Amplification factor: 23
Max plate voltage: 7000 V
Max plate dissipation: 1300 W
Max cathode current: 2 A

Promoted from published Mullard absolute-maximum/limiting-value and characteristic tables; service-specific limits retained in parameter rows.

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 01

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
65 A
Grid To Plate Capacitance
7.2 pF
Input Capacitance
13 pF
Output Capacitance
0.5 pF
Transconductance
7 mA/V
Amplification Factor
23
MaximumOperatingFrequency
50 MHz
Cooling
Forced air

Other

MaximumOperatingFrequency
50 MHz
MaxPlateVoltage
7 kV
MaxCathodeCurrent
2 A
PeakCathodeCurrentMaximum
12 A
MaxPlateDissipation
1.3 kW
MaxGridVoltageMagnitude
1.25 kV
MaxGridCurrent
400 mA
Frequency
50 MHz
ClassC
Plate Voltage
6 kV
ClassC
Plate Current
900 mA
ClassC
Grid Current
280 mA
ClassC
Plate Dissipation
1.3 kW
ClassC
Efficiency
76 %
ClassC