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Voltage Pentode or Tetrode (under 100V) ·Tetrode

1NE9

Directly heated oxide-cathode electrometer tetrode intended for precision measuring applications requiring extremely small currents and sensitive DC signal amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
1.25 V / 26 mA

Description

Directly heated electrometer tetrode with oxide cathode, intended for precision measuring applications.

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
1.25 V
Nominal heater current
26 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
Max plate voltage
12 V

Published ratings and characteristics promoted from the source where directly stated.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

  • Heater or filament voltage

    1.25 V

    Published nominal value

  • Heater or filament current

    26 mA

    Published nominal value