GN3

Cold-cathode numerical indicator documented by Lorenz and comparison sources. Selectable shaped cathodes produce directly visible glowing numerals; later comparison material associates it with the RFT Z560M display family without establishing exact electrical identity.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: -
Nominal heater: -

Description

GN3 is a cold-cathode numerical indicator, classified as Nixie for this batch. The supplied sheet provides electrical operating/rating data and display information.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
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 cathode current: 2.5 mA

Cold-cathode glow-display section; maximum cathode current promoted from the comparable RFT data column.

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

1955 Lorenz

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Nominal anode current
1.5 mA
Maximum mean anode current
2 mA

Data set 02

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Anode Supply Voltage
170 V
Published datasheet value
Maximum Cathode Current
4 mA
Published datasheet value
Normal/Recommended Cathode Current
2 mA
Published datasheet value

Characteristic

Minimum Extinction Voltage
100 V
Published datasheet value

Data set 03

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

Anode Ignition Voltage
145 V
Comparable RFT type Z560M
Anode Burning Voltage
135 V
Comparable RFT type Z560M
Anode Extinction Voltage
120 V
Comparable RFT type Z560M

Other

Minimum Cathode Current
1 mA
Comparable RFT type Z560M
Maximum Cathode Current
2.5 mA
Comparable RFT type Z560M
Peak Cathode Current
10 mA
Comparable RFT type Z560M
Minimum Ambient Temperature
-50 degC
Comparable RFT type Z560M
Maximum Ambient Temperature
70 degC
Comparable RFT type Z560M
Symbol Height
15.5 mm
Comparable RFT type Z560M
Maximum Viewing Distance
10 m
Comparable RFT type Z560M
Maximum Bulb Height
26.5 mm
Comparable RFT type Z560M
Maximum Bulb Diameter
30.1 mm
Comparable RFT type Z560M