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Tube Tinker — Electron Tube Database
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Diode (NOT rectifier) ·Diode-Diode

2H1L

Indirectly heated dual detector and discriminator diode.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
2.2 V / 130 mA

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
2.2 V
Nominal heater current
130 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

2 physical sections, each with unique specifications.

Section 0

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Detector/discriminator diode 1; typical Va 5 V, Ia 2 mA; shared datasheet ratings.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Detector/discriminator diode 2; typical Va 5 V, Ia 2 mA; shared datasheet 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

2026 Russian Receiving

Published operating points and test conditions from this source.

SECTION 0

Diode

Characteristic

  • Plate Voltage

    5 V

    Typical diode anode voltage

Other

  • Heater/filament voltage

    2.2 V

    Heater voltage

  • Heater/filament current

    130 mA

    Heater current