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

Specialized - Klystron ·Klystron

1K20XNA

Ceramic-metal X-band reflex klystron specially designed as a parametric-amplifier pump source, factory preset across approximately 8.5 to 11 GHz.

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

Description

Ceramic-and-metal X-band reflex klystron especially suited for parametric-amplifier pump applications, factory preset across 8.5 to 11.0 GHz.

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
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

Klystron

X-ray radiationInterelectrode capacitances
Max cathode current
50 mA

Reflex klystron: specialized resonator/repeller ratings have no direct promoted columns and are preserved in TUBE_SECTION_PARAMETER; published maximum cathode current is promoted.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Klystron

Characteristic

  • Frequency Range

    8500 to 11000 MHz

  • Published Output Power

    150 mW

    Minimum or typical as stated by source

  • Warm-up Time

    30 s

Other

  • Maximum DC Resonator Voltage

    450 V

  • Maximum Resonator Dissipation

    20 W

  • Maximum Negative Repeller Voltage

    500 V

    Negative with respect to cathode

  • Maximum Positive Repeller Voltage

    0 V

    Positive with respect to cathode

  • Typical DC Resonator Voltage

    400 V

  • Typical DC Cathode Current

    40 mA

  • Typical Power Output

    200 mW