GA90

Cold-cathode numeric or symbol display tube documented through Japanese data and an RFT Z560M comparison. Available sources establish glow-discharge display operation and operating points at several anode supply voltages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B13B
Base pins: -
Nominal heater: -

Description

GA90 is a cold-cathode Nixie numeric/symbol display tube. The supplied datasheet set identifies Z560M 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

B13B Nixie 13-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B13B
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 display section. The source table publishes operating-point and mechanical data rather than conventional vacuum-tube gm/rp/mu ratings.

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

1969 Nixie Zennippon Shinkukan

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Displayed symbols
0–9

Other

Connection diagram number
1
See source basing/connection diagram
Maximum overall length
41 mm
Maximum display diameter
29.5 mm
Maximum power consumption
0.4 W
Anode supply DC voltage
180 V
Operating point at 180 V
Average anode current
2 mA
AnodeSupplyVoltage=180V; approximate
Series resistor Rp
30 kOhm
AnodeSupplyVoltage=180V
Anode supply DC voltage
220 V
Operating point at 220 V
Average anode current
2 mA
AnodeSupplyVoltage=220V; approximate
Series resistor Rp
50 kOhm
AnodeSupplyVoltage=220V
Anode supply DC voltage
250 V
Operating point at 250 V
Average anode current
2 mA
AnodeSupplyVoltage=250V; approximate
Series resistor Rp
65 kOhm
AnodeSupplyVoltage=250V
Anode supply DC voltage
300 V
Operating point at 300 V
Average anode current
2 mA
AnodeSupplyVoltage=300V; approximate
Series resistor Rp
90 kOhm
AnodeSupplyVoltage=300V

Data set 02

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