1EE1P

Russian directly heated electrometric tetrode for very-low-current measurements.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 1 V / 46 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: 1 V
Nominal heater current: 46 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

Tetrode

X-ray radiationInterelectrode capacitances

Amplification factor: 1.3

Russian 1EE1P directly heated oxide-cathode electrometer tetrode for very-low-current measurement: 1.0 V, 46 mA nominal filament (40–52 mA range), source amplification figure 1.3. Typical anode 6 V, control grid -3 V and screen grid 4 V are operating points, not absolute maxima. Derived Russian reference prints transconductance 50 mA/V (35–65 range), implausible unit for electrometric operation; intrinsic gm deliberately remains NULL pending primary manufacturer unit verification. One tetrode physical section; section index standardized from 0 to 1.

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 1

Tetrode

Characteristic

Transconductance
50 mA/V (datasheet printed; unit not verified) mA/V
Source states 50 mA/V, range 35–65; retain literal without SI reinterpretation

Other

Plate voltage
6 V
Typical anode voltage
Heater/filament voltage
1 V
Filament nominal voltage
Heater/filament current
46 mA
Filament current nominal; min 0.040, max 0.052 A

Characteristics

Plate Voltage
6 V
Typical anode voltage