IN18

Russian cold-cathode glow-discharge numeric/symbol indicator for direct visual display. Documentation specifies ignition voltage up to 170 V and a published life of at least 5,000 hours, with operating data for both DC and pulsating supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: RSH31
Base pins: -
Nominal heater: -

Description

The IN18 is a Russian cold-cathode glow-discharge Nixie numeric/symbol display intended for visual indication. Ignition voltage up to 170 v, maintaining/anode-cathode voltage up to 150 v, published life at least 5000 h. The supplied Russian datasheet was translated for this record.

Socket description

Soviet RSh31 12-contact large Nixie tube socket family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: RSH31
Base pins: -
Nominal heater voltage: -
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 1

Nixie

X-ray radiationInterelectrode capacitances

Regulator maximum current: 4 A
Regulator starting voltage: 170 V
Regulator maintaining voltage: 150 V

Single cold-cathode glow-discharge indicator section; Nixie-specific operating data are also retained as parameters.

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

196X Nixie Russian 2

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

DC operating current
4 to 7 mA
DC supply
Pulsating operating current average
2 to 4 mA
50 Hz pulsating supply
Supply voltage
200 to - V
Minimum stated source/supply voltage
Ignition voltage
- to 170 V
Published datasheet value
Maintaining voltage / anode-cathode drop
- to 150 V
Published datasheet value
Indication current
- to 4 mA
Published datasheet value

Characteristic

Brightness
50 to - cd/m^2
Minimum
Viewing angle
90 to - deg
Minimum
Service life
5000 to - h
Minimum