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Power - Triode ·Triode

HT322

RFT high-frequency triode intended for amplification, oscillation, measurement, or microwave-frequency electronic service, with published heater and electrical characteristics.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 800 mA

Description

A triode intended for amplification, oscillation, measurement, or microwave-frequency service, with source-published heater and electrical characteristics.

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
800 mA
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
0.01 S
Amplification factor
90
Max plate voltage
1000 V
Max plate dissipation
80 W
Max grid dissipation
2 W
Max cathode current
125 mA

Published ratings and characteristics promoted where clearly stated. RFT HT322 indirectly heated, air-cooled metal-ceramic microwave power triode intended primarily for oscillators up to about 2.75 GHz. Typical static characteristics at plate 400 V and 15 mA: gm 10 mA/V and amplification factor 90. Continuous operating maximum plate voltage 1000 V, plate dissipation 80 W, grid dissipation 2 W and cathode current 125 mA. The 2000 V anode limit is pulse-only (5 microseconds). For continuous-wave service, reduce heater from nominal 12.6 V to 12.1 V at 400–1000 MHz, 11.5 V at 1–2 GHz, and 10.8 V above 2 GHz. Forced-air cooling 60 L/min specified under rated conditions.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • den Einsatz in Oszillatoren bis zu Frequenzen von etwa

    2.75 GHz

    den Einsatz in Oszillatoren bis zu Frequenzen von etwa 2,75 GHz.

  • Bei Frequenzen oberhalb

    400 MHz

    Bei Frequenzen oberhalb 400 MHz

Other

  • I9

    800 mA

    I9 0,8 A N

  • Tr

    22 min

    Tr 22 min

  • reduziert werden. Bei maximaler N] |

    8 S

    reduziert werden. Bei maximaler N] |8S] ®]

  • PublishedValue

    1000 MHz

    . . 1000 MHz 12,1 v

  • PublishedValue

    2000 MHz

    . .2000 MHz 11,5 V

  • >

    2000 MHz

    > 2000 MHz 10,8 v

  • U,

    400 V

    U, 400 V

  • 1,

    15 mA

    1, 15 mA

  • S

    10 mA

    S 10 mA/V

  • £ 2,31 0,79 2,31

    0.79 GHz

    £ 2,31 0,79 2,31 0,79 GHz Uap (tp = 5 ps) max. 2000

  • U, 500 500 800

    800 V

    U, 500 500 800 800 V Ua mod max., %600

  • I 100 100 100

    100 mA

    I 100 100 100 100 mA (100% moduliert)

  • I, 22 22 15 15 m *g8 max,

    30 V

    I, 22 22 15 15 m *g8 max, 30 V

  • Pout 4# 12 8

    20 W

    Pout 4# 12 8 20 W e max. 400 V

  • Pa max

    80 W

    Pa max. 80 W

  • Kapazitäten Ik max

    125 mA

    Kapazitäten Ik max. 125 mA