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

Diode (NOT rectifier) ·Diode

6D6A

Subminiature Russian high-voltage diode designed for detection and rectification of RF and microwave oscillations.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
4
Nominal heater
6.3 V / 150 mA

Description

Subminiature glass high-voltage diode for detection and rectification of RF and microwave oscillations.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
4
Nominal heater voltage
6.3 V
Nominal heater current
150 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

Diode

X-ray radiationInterelectrode capacitances
Max plate dissipation
0.2 W
Rectifier peak inverse voltage
450 V
Rectifier nominal output current
10 mA
Rectifier peak forward current
70 mA
Rectifier max heater-cathode voltage
165 V

Representative section row from the complete filename-matched Russian datasheet content only; neighboring-tube fragments excluded.

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

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

  • Heater voltage nominal

    6.3 V

    Published heater operating voltage

  • Heater current nominal

    150 mA

    Nominal or midpoint of published heater-current tolerance

  • Initial plate current

    20 uA

    Maximum

  • Rectified current

    8 mA

    Minimum

  • Emission current

    35 mA

    Minimum at 10 V

  • Plate-cathode insulation resistance

    200 MOhm

    Minimum for 6D6A

  • Service life

    1500 h

    Minimum

Capacitance

  • Plate-cathode capacitance

    3 pF

    Nominal

Other

  • Peak inverse voltage

    450 V

    Published

  • Rectified current limit

    10 mA

    Average

  • Peak plate current

    70 mA

    Published