E6

Directly heated dual space-charge-grid electrometer tetrode designed for measuring extremely small currents and voltages, with exceptionally low grid reverse current.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 1.25 V / 20 mA

Description

Directly heated dual space-charge-grid electrometer tetrode for measuring extremely small currents and voltages.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: 9
Nominal heater voltage: 1.25 V
Nominal heater current: 20 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 1

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.000025 S
Max plate voltage: 10 V
Max cathode current: 1 mA

Representative section for repeated identical sections.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.000025 S
Max plate voltage: 10 V
Max cathode current: 1 mA

Second physical space-charge-grid electrometer tetrode restored.

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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Maximum grid 1 voltage
5 V
Minimum negative grid 2 voltage
2 V

Data set 02

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

GridReverseCurrentMaximum
0.00000000001 mA

Application

Application
Electrometer text