BTL503

Very-high-power Brown Boveri transmitting triode for large RF systems. Extremely high transconductance, roughly 45 kW plate dissipation, and 15 kV capability support well over 100 kW of Class C output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 20 V / 200 A

Description

air-cooled transmitting triode for RF and AF amplification and industrial or broadcast service. The datasheet specifies a directly heated thoriated tungsten cathode and air anode cooling.

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: 20 V
Nominal heater current: 200 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: 0.1 S
Max plate voltage: 15000 V
Max plate dissipation: 45000 W

Promoted ratings and characteristics audited from General Data and operating tables.

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

1969 Brown Boveri

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum plate voltage
15000 V
Maximum plate dissipation
45000 W
Maximum frequency
30 MHz
RF output power, Class C unmodulated
182000 W
ClassC

Characteristics

Transconductance
100000 µS