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Power - Pentode (NOT beam) (over 1000V 100W) ·Pentode

SRS505

Kilowatt-class RFT transmitting pentode capable of approximately 1.5 kW Class C RF output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 10 V / 16.5 A

Description

Radiation-cooled 1-kW transmitting pentode for communications and industrial RF generators.

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: 10 V
Nominal heater current: 16.5 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

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.009 S
Max plate voltage: 3000 V
Max screen voltage: 600 V
Max plate dissipation: 700 W
Max screen dissipation: 150 W
Max grid dissipation: 10 W
Max cathode current: 900 mA

Published ratings and characteristics promoted where clearly stated.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterVoltageNominal
10 V
Nominal
HeaterCurrentNominal
16.5 A
Nominal
Maximum Plate Voltage
3000 V
Maximum Screen Voltage
600 V
Maximum Plate Dissipation
700 W
Maximum Screen Dissipation
150 W
MaximumGridDissipation
10 W
Maximum Cathode Current
900 mA
Maximum Frequency
40 MHz
RFOutputPower
1500 W
ClassC; <=3 MHz

Characteristic

Transconductance
9000 µS
Typical