Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Microwave Tube ·Microwave

F4171A

O-type carcinotron backward-wave oscillator covering approximately 12.4–18 GHz, with integral permanent magnet and forced-air cooling for broadband microwave generation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 1.15 A

Description

O-type carcinotron (backward-wave oscillator), 12.4–18 GHz; integral permanent magnet; forced-air cooled.

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
6.3 V
Nominal heater current
1.15 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

Microwave

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Specialized microwave-device ratings are preserved densely in TUBE_SECTION_PARAMETER because the locked promoted columns do not directly represent beam/helix/collector/magnetron pulse ratings.

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

Microwave

Characteristic

  • Frequency Range

    12.4 to 18 GHz

  • Heater Current

    750 mA to 1.8 A

  • Anode Current

    -1 to 3 mA

Other

  • Anode Voltage Maximum

    250 V

  • Line Voltage Maximum

    1600 V

  • Line Current Maximum

    30 mA

  • Typical Frequency

    18 GHz

  • Typical Line Voltage

    1400 V

  • Typical Line Current

    14.6 mA

  • Typical Anode Voltage

    120 V

  • Typical Output Power

    118 mW

Capacitance

  • Anode-All-Electrodes Capacitance Maximum

    30 pF

  • Line-All-Electrodes Capacitance Maximum

    30 pF