BTL31

High-power Brown Boveri transmitting triode for VHF RF amplification. Approximately 3 kW plate dissipation and multi-kilovolt operation support several kilowatts of Class C output with useful service to about 220 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12.6 V / -

Description

air-cooled transmitting triode for RF and AF amplification and industrial or broadcast service. The datasheet specifies a directly heated 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: 12.6 V
Nominal heater current: -
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

Max plate voltage: 6200 V
Max plate dissipation: 3000 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
6200 V
Maximum plate dissipation
3000 W
Maximum plate current
14 A
Maximum frequency
220 MHz
RF output power, Class C unmodulated
6000 W
ClassC