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YD1244

Air-cooled metal-ceramic RF power triode in the YD1240 family, designed for Class C industrial oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 33 A

Description

YD1244 air-cooled metal-ceramic RF power triode, explicitly covered on the YD1240/YD1244 sheet. Published filament, capacitance, limiting-rating, and representative Class-C industrial oscillator data were extracted from the supplied Philips sheet.

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: 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

Plate resistance: 2000 Ω
Transconductance: 0.01 S
Amplification factor: 20
Max plate voltage: 5500 V
Max plate dissipation: 1600 W
Max cathode current: 1.1 A

High-power RF triode; published principal characteristic and limiting values promoted.

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

Characteristics

Filament voltage
6.3 V
Filament current
33 A
Transconductance
10000 uS
Amplification factor
20
Filament voltage above 120 MHz
6 V
Frequency>120MHz

Capacitance

Anode to filament capacitance
0.4 pF
Grid to filament capacitance
17 pF
Anode to grid capacitance
14 pF

Other

Maximum anode voltage
5500 V
Maximum anode current
1.1 A
Maximum anode dissipation
1600 W
Operating frequency
27.12 MHz
IndustrialClassC
Operating anode voltage
5000 V
IndustrialClassC;Frequency=27.12MHz
Operating anode current
750 mA
IndustrialClassC;Frequency=27.12MHz
Anode output power
2900 W
IndustrialClassC;Frequency=27.12MHz
Frequency for full ratings
250 MHz

Construction

Cooling system
ForcedAir