CD28

Cold-cathode Japanese Nixie numerical indicator with published electrical limits, viewing angle, and recommended current-limiting resistance.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Cold-cathode Nixie numerical indicator from a shared Japanese specification table; model-specific column extracted for CD28. The table supplies ionization voltage, cathode-current range, power/current limits, temperature range, viewing angle, and recommended anode-resistor values.

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

Max cathode current: 3 mA
Regulator starting voltage: 170 V

Cold-cathode numerical indicator section. Starting/ionization and cathode-current data are represented directly; triode/pentode fields are not applicable.

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 Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Supply voltage minimum
170 V
DC operation
Ionization voltage maximum
170 V
DC operation
Average cathode power dissipation maximum
0.4 W
Each numerical cathode
Peak cathode current maximum
3 mA
Numerical cathode
Average cathode current range
1 to 2.5 mA
Numerical cathode
Storage ambient temperature
-65 to 70 °C
Operating ambient temperature
-10 to 55 °C
Maximum viewing angle
160 deg
Approximate
Weight
9 g
Approximate
Anode series resistor
15 kΩ
SupplyVoltage=170V
Anode series resistor
35 kΩ
SupplyVoltage=200V
Anode series resistor
65 kΩ
SupplyVoltage=250V
Anode series resistor
100 kΩ
SupplyVoltage=300V

Characteristics

Numerical cathode current
1 to 2.5 mA
DC operation