IN7B

Russian cold-cathode glow-discharge numeric/symbol indicator intended for direct visual display. Manufacturer data specify ignition voltage up to 170 V and maintaining voltage up to 160 V, with a published minimum operating life of 400 hours.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

The IN7B 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 160 v, published life at least 400 h. The supplied Russian datasheet was translated for this record.

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: -
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: 2.5 A
Regulator starting voltage: 170 V
Regulator maintaining voltage: 160 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

Ignition delay time
- to 1 s
Published datasheet value
DC operating current
- to 3.5 mA
Published datasheet value
Pulsed operating current average
- to 4 mA
Published datasheet value
Ambient operating temperature minimum
-60 degC
Published datasheet value
Ambient operating temperature maximum
85 degC
Published datasheet value
Supply voltage
200 to - V
Minimum stated source/supply voltage
Ignition voltage
- to 170 V
Published datasheet value
Maintaining voltage / anode-cathode drop
- to 160 V
Published datasheet value
Indication current
- to 2.5 mA
Published datasheet value

Characteristic

Service life
400 to - h
Minimum