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Power - Triode ·Triode

TH296

Ceramic-metal transmitting power triode intended for oscillator and amplifier service and especially designed for pulse-amplifier applications. Its approximately 12 kW plate-dissipation class places it among very-high-power pulsed RF devices.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 110 A

Description

The TH296 is a ceramic-metal transmitting triode usable as an oscillator or amplifier and especially designed for pulse-amplifier 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
7.5 V
Nominal heater current
110 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 dissipation
12000 W

Published electrical data audited and retained in parameter table.

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

Triode

Other

  • Heater voltage .........coecvvveunnn Ceercesanas .e [1]

    7.5 V

    Heater voltage .........coecvvveunnn Ceercesanas .e 7.5+3% V

  • Heater voltage .........coecvvveunnn Ceercesanas .e [2]

    3 V

    Heater voltage .........coecvvveunnn Ceercesanas .e 7.5+3% V

  • Heater current, approximate......... ceeterensenns

    110 A

    Heater current, approximate......... ceeterensenns 110 A

  • Minimum cathode current at Va = Vg=+ [1]

    600 A

    Minimum cathode current at Va = Vg=+600 V .... 50 A

  • Minimum cathode current at Va = Vg=+ [2]

    50 A

    Minimum cathode current at Va = Vg=+600 V .... 50 A

  • Cathode-grid ........c.ccvvievriienninnn v

    65

    Cathode-grid ........c.ccvvievriienninnn v 65 pF

  • Grid-anode [1]

    0

    Grid-anode .........0000000 Cerecenraeens . 16 pF

  • Grid-anode [2]

    16

    Grid-anode .........0000000 Cerecenraeens . 16 pF

  • Anode-cathode .................. e

    0.3

    Anode-cathode .................. e . 0.3 pF

  • Transconductance (Ia = [1]

    1

    Transconductance (Ia = 1 A) ..... ceeeesae P .e 60 000 pmhos

  • Transconductance (Ia = [2]

    60

    Transconductance (Ia = 1 A) ..... ceeeesae P .e 60 000 pmhos

  • Transconductance (Ia = [3]

    0

    Transconductance (Ia = 1 A) ..... ceeeesae P .e 60 000 pmhos

  • Maximum inlet air temperature ............... ceas

    45

    Maximum inlet air temperature ............... ceas 45 °C

  • Maximum outlet air temperature

    100

    Maximum outlet air temperature ................. 100 °C

  • Maximun electrode terminal temperature ceseenns

    250

    Maximun electrode terminal temperature ceseenns 250 °C

  • DC anode voltage.........ovoinieiieeenenccancaanns

    15 V

    DC anode voltage.........ovoinieiieeenenccancaanns 15 kv

  • Grid bias voltage ................cccu... chseeaese

    1000 V

    Grid bias voltage ................cccu... chseeaese - 1000

  • Peak cathode current

    60 A

    Peak cathode current ... 60

  • Anode dissipation ........ eererecnnens crneseneens

    12 kW

    Anode dissipation ........ eererecnnens crneseneens 12 kW

  • Grid dissipation ......... cesannne eenaan creenas

    350 W

    Grid dissipation ......... cesannne eenaan creenas . 350

  • Pulse length ...... e reaaaan teateesanesesannas

    500

    Pulse length ...... e reaaaan teateesanesesannas 500 us

  • Maximum frequency at full load ............. cees

    500 MHz

    Maximum frequency at full load ............. cees 500 MHz

  • Published value

    74

    74 Grid