TY2125

Directly heated all-glass VHF power triode for radio-frequency service. Moderate plate dissipation and multi-kilovolt capability provide useful transmitting power for VHF oscillator and amplifier applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 5.4 A

Description

All-glass VHF power triode rated for about 135 W anode dissipation.

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: 5.4 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: 0.003 S
Amplification factor: 26
Max plate voltage: 2500 V
Max plate dissipation: 135 W
Max grid dissipation: 16 W
Max cathode current: 240 mA

Published ratings and characteristics promoted semantically from the approved source; repeated identical physical sections compressed where applicable.

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

1951 Mullard Valve and Service Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Operating Frequency Full Ratings
150 MHz
Operating Frequency Reduced Ratings
200 MHz
Power Output
560 W
TwoTubes,PushPull,ClassB,AF
Plate Voltage
2500 V

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
5.4 A
Grid To Plate Capacitance
5.5 pF
Input Capacitance
5.5 pF
Output Capacitance
0.1 pF
Transconductance
28 mA/V
Amplification Factor
25
MaximumOperatingFrequency
200 MHz

Other

MaxPlateVoltage
2.5 kV
MaxPlateDissipation
135 W
MaxGridDissipation
16 W
MaxCathodeCurrent
250 mA
PeakCathodeCurrentMaximum
1.6 A