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Power - Triode ·Triode

YD1120

Directly heated thoriated-tungsten RF power triode for transmitting, industrial, and Class B service. Rated for approximately 5 kW plate dissipation, with moderate gain and high transconductance for substantial RF power-amplifier applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 33 A

Description

Directly heated thoriated-tungsten R.F. power triode. The Philips sheet publishes filament data, interelectrode capacitances, static characteristics, limiting ratings, and operating conditions for R.F. and/or Class B service.

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
12.6 V
Nominal heater current
33 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
0.017 S
Amplification factor
32
Max plate dissipation
5000 W

Published electrical data additionally captured 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

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Filament voltage Vg

    12.6 V

    Filament voltage Vg = 12,6 V

  • Filament current If

    33 A

    Filament current If = 33 A

  • Anode voltage Vo,

    4 kV

    Anode voltage Vo, = 4.0 kV

  • Anode current I,

    1 A

    Anode current I, = 1.0 A

  • Amplification factor u

    32

    Amplification factor u = 32

  • Mutual conductance S

    17 mA

    Mutual conductance S = 17 mA/V

  • Frequency f

    2201

    Frequency f = 30 30 30 110 2201) MHz

  • Anode voltage Vo,

    3 kV

    Anode voltage Vo, = 6.0 5.0 4.0 5.0 3.0 kV

  • Grid voltage Vg

    -160 V

    Grid voltage Vg = -400 -300 -200 -300 -160 V

  • Anode current In

    1.25 A

    Anode current In = 1.5 1.5 1.37 1.25 1.25 A

  • Grid current Ig

    250 mA

    Grid current Ig = 310 330 300 300 250 mA

  • Driver output power Wdar

    510 W

    Driver output power Wdar = 275 240 190 250 510 W

  • Anode input power Wi,

    3.75 kW

    Anode input power Wi, = 9.0 7.5 5.5 6.25 3.75 kW

  • Anode dissipation W,

    1.6 kW

    Anode dissipation W, = 2.1 1.9 1.5 1.45 1.6 kW

  • Output power Wo

    2.65 kW

    Output power Wo = 6.9 5.6 4.0 4.8 2.65 kW

  • Tube efficiency

    70

    Tube efficiency 1 = 76.5 75 73 77 70 %

  • Output power in the load Wy

    2.15 kW

    Output power in the load Wy 5.5 4.5 3.2 3.9 2.15 kW

  • Frequency f up to

    220 MHz

    Frequency f up to 75 110 220 MHz

  • Frequency f

    110 MHz

    Frequency f = 75 110 MHz

  • Anode voltage vV,

    4 kV

    Anode voltage vV, = 5.0 4.0 kV

  • Grid voltage Vg

    350 V

    Grid voltage Vg = -400 =350 V

  • Anode current I,

    930 mA

    Anode current I, = 1.2 0.93 A

  • Grid current Ig

    240 mA

    Grid current Ig = 300 240 mA

  • Driver output power War

    130 W

    Driver output power War = 205 130 W

  • Anode input power Wia

    3.72 kW

    Anode input power Wia = 6.0 3.72 kW

  • Anode dissipation Wy

    0.92 kW

    Anode dissipation Wy = 1.3 0.92 kW

  • Output power Wo

    2.8 kW

    Output power Wo = 4.7 2.8 kW

  • Tube efficiency n

    13

    Tube efficiency n = 78,5 13 %

Other

  • Anode voltage Va - max

    4 kV

    Anode voltage Va - max. 6.2 5.5 4.0 kV

  • Anode current Ia = max

    1.5 A

    Anode current Ia = max. 1.5 1.5 1.5 A

  • Anode input power Wi, = max

    6 kW

    Anode input power Wi, = max. 9.3 8.2 6.0 kW

  • Anode dissipation Wy = max

    5 kW

    Anode dissipation Wy = max. 5.0 5.0 5.0 kW

  • Negative grid voltage -Vg = max.1000

    1000 V

    Negative grid voltage -Vg = max.1000 1000 1000 V

  • Grid current Ig = max

    350 mA

    Grid current Ig = max. 350 350 350 mA

  • Anode voltage V, = max

    3.2 kV

    Anode voltage V, = max. 5.0 4.5 3.2 kV

  • Anode current Iy = max

    1.3 A

    Anode current Iy = max. 1.3 1.3 1.3 A

  • Anode input power Wia = max

    4 kW

    Anode input power Wia = max. 6.5 5.8 4.0 kW

  • Anode dissipation W, = max

    3.4 kW

    Anode dissipation W, = max. 3.4 3.4 3.4 kW

  • Negative grid voltage --Vg = max

    1000 V

    Negative grid voltage --Vg = max. 1000 1000 1000 V

  • Grid current

    350 mA

    Grid current 1g = max. 350 350 350 mA