TH313

Forced-air-cooled coaxial ceramic-metal transmitting tetrode designed for television, single-sideband, and FM service. Its construction supports professional linear and broadcast RF output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 65 A

Description

The Thomson-CSF TH313 is a forced-air-cooled coaxial ceramic/metal transmitting tetrode for television, ssb and fm service.

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: 5 V
Nominal heater current: 65 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

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.05 S
Amplification factor: 5
Max plate voltage: 5200 V
Max screen voltage: 400 V
Max plate dissipation: 7000 W
Max screen dissipation: 75 W
Max grid dissipation: 25 W

Promoted from printed general-characteristics and maximum-ratings 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

1972 Thomson CSF

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

Amplification factor
5
Transconductance
50000 uS

Other

Maximum anode voltage
5200 V
Maximum screen-grid voltage
400 V
Maximum anode dissipation
7000 W
Maximum screen-grid dissipation
75 W
Maximum grid dissipation
25 W
Maximum operating frequency
1000 MHz

Capacitance

Grid-anode/input capacitance
43 pF
Grid-cathode/output capacitance
9 pF
Cathode-anode capacitance
0.07 pF