GNP7A

Gas-filled cold-cathode Nixie numerical indicator designed to display decimal digits by selective glow discharge of shaped cathodes.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B13D
Base pins: -
Nominal heater: -

Description

GNP7A is a cold-cathode Nixie numeric/symbol display tube. The supplied datasheet set identifies Z5730M/Z5740M as a comparable RFT display type and provides ignition, burning and extinction voltages, cathode-current limits, environmental limits and mechanical/display data through that comparison.

Socket description

13-pin subminiature Nixie wire-lead base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B13D
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: 170 V
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

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

Anode Ignition Voltage
150 V
Comparable RFT type Z5730M/Z5740M
Anode Burning Voltage
140 V
Comparable RFT type Z5730M/Z5740M
Anode Extinction Voltage
120 V
Comparable RFT type Z5730M/Z5740M

Other

Minimum Cathode Current
1.5 mA
Comparable RFT type Z5730M/Z5740M
Maximum Cathode Current
2.5 mA
Comparable RFT type Z5730M/Z5740M
Peak Cathode Current
12 mA
Comparable RFT type Z5730M/Z5740M
Minimum Ambient Temperature
-50 degC
Comparable RFT type Z5730M/Z5740M
Maximum Ambient Temperature
70 degC
Comparable RFT type Z5730M/Z5740M
Symbol Height
13 mm
Comparable RFT type Z5730M/Z5740M
Maximum Viewing Distance
8 m
Comparable RFT type Z5730M/Z5740M
Maximum Bulb Height
47.6 mm
Comparable RFT type Z5730M/Z5740M
Maximum Bulb Diameter
19 mm
Comparable RFT type Z5730M/Z5740M