TB31000

Directly heated Philips transmitting triode for RF and AF power service. Rated for approximately 500 W plate dissipation and 3 kV plate voltage, placing it among the higher-power radiation-cooled TB-series types.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12 V / 8.5 A

Description

TB31000 is a Philips RF/AF transmitting triode. The supplied datasheet provides direct-filament data, RF/AF ratings, capacitances and high-power operating conditions.

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 V
Nominal heater current: 8.5 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

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 3000 V
Max plate dissipation: 500 W
Max cathode current: 700 mA

Published filament, capacitance, typical characteristics, limiting values and RF/AF operating tables reviewed.

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

1963 Philips Electron Tubes Handbook V4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Filament voltage
12 V
DirectlyHeated
Filament current
8.5 A
DirectlyHeated

Other

Maximum plate voltage
3000 V
Published limit
Maximum plate dissipation
500 W
Published limit
Maximum cathode/plate current
700 mA
Published limit

Capacitance

Plate capacitance
7 pF
Published
Grid capacitance
15 pF
Published
Grid-to-plate capacitance
8 pF
Published

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Capacités Cg
15 a
Capacités Cg = 15 pF