Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Nixie ·Nixie

CD11

Cold-cathode numerical display tube in the supplied Nixie table; a separate Ferranti source also associates CD11 with flash-tube data, so functional identity remains conflicting.

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 CD11. 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 plate voltage
500 V
Max cathode current
4 mA
Regulator starting voltage
170 V

Promoted fields were populated only where the Ferranti sheet maps cleanly to the locked schema; additional ratings and operating values are retained in TUBE_SECTION_PARAMETER.

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

1963 Ferranti

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • Discharge energy maximum

    50 J

  • Operating voltage minimum

    180 V

  • Operating voltage maximum

    500 V

  • Minimum interval between flashes

    10 s

    AtMaximumDissipation

  • Discharge capacitor maximum

    600 uF

  • Operating voltage

    410 V

  • Trigger voltage minimum

    2 kV

  • Trigger voltage maximum

    3 kV

  • Discharge capacitor

    600 uF

  • Charging resistor

    3300 Ohm

  • Flash duration

    0.002 s

    Approximate

Data set 02

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

    0.5 W

    Each numerical cathode

  • Peak cathode current maximum

    4 mA

    Numerical cathode

  • Average cathode current range

    1.5 to 3.5 mA

    Numerical cathode

  • Storage ambient temperature

    -65 to 70 °C

  • Operating ambient temperature

    -10 to 55 °C

  • Maximum viewing angle

    160 deg

    Approximate

  • Weight

    25 g

    Approximate

  • Anode series resistor

    10 kΩ

    SupplyVoltage=170V

  • Anode series resistor

    22 kΩ

    SupplyVoltage=200V

  • Anode series resistor

    42 kΩ

    SupplyVoltage=250V

  • Anode series resistor

    62 kΩ

    SupplyVoltage=300V

Characteristics

  • Numerical cathode current

    1.5 to 3.5 mA

    DC operation