20LM1E

Russian cathode-ray display tube for dual-color waveform display, with green and orange screen and 6.3 V heater.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / -

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: -
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 0

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Datasheet anode voltage: 8 kV (operating specification, not stated maximum). Glass side-anode; 3000 g; magnetic deflection, electrostatic focusing; green/orange; focused line 0.6 mm; brightness orange 4, green 2 cd/m²; afterglow orange 3 s, green 2 s. Source: 2026 Russian CRT Oscilloscope.

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.

No source-specific operating conditions are recorded.