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Nixie ·Nixie

GR12G

Gas-filled cold-cathode alphabetic character indicator designed to display letter characters by selective glow discharge.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B26A
Base pins
-
Nominal heater
-

Description

GR12G is a cold-cathode alphabetic character indicator, classified as Nixie for this batch. The supplied sheet provides electrical operating/rating data and display information.

Socket description

26-pin dual-ring all-glass counting/display-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B26A
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
Max plate voltage
220 V
Max cathode current
5 mA

Applicable published ratings promoted; switching, display, trigger and regulator characteristics 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 Ericsson Telephones Ltd

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

  • Minimum breakdown voltage

    220 V

  • Nominal/running voltage

    170 V

  • Displayed characters

    A to L i

  • Display orientation

    Side-viewing

Other

  • Maximum cathode/anode current

    5 mA

Data set 02

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • Anode Supply Voltage

    250 V

    Published datasheet value

  • Maximum Cathode Current

    9 mA

    Published datasheet value

  • Maximum Cathode Current Letter I

    5 mA

    Published datasheet value

  • Maximum Cathode Current Letters L and T

    5.5 mA

    Published datasheet value

  • Maximum Cathode Current Letters J and F

    7.5 mA

    Published datasheet value

Characteristic

  • Running Voltage Letter T

    170 V

    At 4.5 mA

  • Running Voltage Letters L and T

    175 V

    At 5.0 mA

  • Running Voltage Letters J and F

    185 V

    At 6.25 mA