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Nixie ·Nixie

ZM1021

Cold-cathode symbol indicator designed for direct glow-discharge character display. Multiple manufacturer sources document its operating and mechanical characteristics, identifying it as a specialized symbol companion to numerical instrumentation readouts.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: Special 13-pin
Socket code: B13B
Base pins: 13
Nominal heater: -

Description

ZM1021 is a cold-cathode symbol indicator, classified as Nixie for this batch. The supplied datasheet provides cold-cathode display ratings, operating conditions, and mechanical/display information.

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: Special 13-pin
Socket code: B13B
Base pins: 13
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Special 13-pin - 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: 10 mA
Regulator minimum current: 1 A
Regulator maximum current: 2.5 A
Regulator starting voltage: 160 V
Regulator maintaining voltage: 140 V

Single indicator/counting section. Nixie-specific electrical ratings and operating data 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

1965 Nixie Valvo

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Ignition voltage
160 V
Typical characteristic
Burning voltage
140 V
Typical glow voltage
Extinction voltage
120 V
Typical characteristic
Life with one digit continuously displayed
5000 to - h
Recommended conditions
Life with changing display
30000 h
Digit changed at least every 100 h

Other

Continuous cathode current
1 to 2.5 mA
Absolute range
Pulse cathode current
4 to 10 mA
Pulse operation; max pulse 20 ms
Cathode-to-cathode voltage
- to 120 V
Absolute maximum
Pulse rise time
80 to - us
Pulse operation
Pulse source internal resistance
- to 1 kOhm
Pulse operation
Envelope temperature
- to 70 degC
Absolute maximum
Recommended DC supply voltage
170 V
+/-3% example
Recommended DC operating voltage
140 V
At display electrodes
Recommended off-cathode bias
60 to - V
DC operation with bias

Data set 02

1966 Nixie Telefunken

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Ignition voltage
160 V
Typical characteristic
Burning voltage
140 V
Typical glow voltage
Extinction voltage
120 V
Typical characteristic
Life with one digit continuously displayed
5000 to - h
Recommended conditions
Life with changing display
30000 h
Digit changed at least every 100 h

Other

Continuous cathode current
1 to 2.5 mA
Absolute range
Pulse cathode current
4 to 10 mA
Pulse operation; max pulse 20 ms
Cathode-to-cathode voltage
- to 120 V
Absolute maximum
Pulse rise time
80 to - us
Pulse operation
Pulse source internal resistance
- to 1 kOhm
Pulse operation
Envelope temperature
- to 70 degC
Absolute maximum
Recommended DC supply voltage
170 V
+/-3% example
Recommended DC operating voltage
140 V
At display electrodes
Recommended off-cathode bias
60 to - V
DC operation with bias

Data set 03

1967 Nixie La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

Ignition/Starting Voltage
160 V
Published ignition/start value
Extinction Voltage
120 V
Published extinction value
Maintaining Voltage
140 V
Published maintaining/burning value
Minimum Cathode Current
1 mA
Published minimum

Other

Recommended/Minimum Supply Voltage
170 V
Published operating condition
Maximum Cathode Current
2.5 mA
Published maximum/average maximum
Peak Cathode Current
10 mA
Published peak value

Data set 04

1969 Nixie Mullard

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

Numeral/Character Height
15.5 mm
Published mechanical/display data
Maximum Peak Cathode Current
10 mA
Published peak limit

Characteristic

Supply Voltage
170 V
Published operating data
Minimum Ignition Voltage
170 V
Minimum anode-to-cathode voltage necessary for ignition

Data set 05

1969 Nixie Valvo

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Ignition voltage
160 V
Typical characteristic
Burning voltage
140 V
Typical glow voltage
Extinction voltage
120 V
Typical characteristic
Life with one digit continuously displayed
5000 to - h
Recommended conditions
Life with changing display
30000 h
Digit changed at least every 100 h

Other

Continuous cathode current
1 to 2.5 mA
Absolute range
Pulse cathode current
4 to 10 mA
Pulse operation; max pulse 20 ms
Cathode-to-cathode voltage
- to 120 V
Absolute maximum
Pulse rise time
80 to - us
Pulse operation
Pulse source internal resistance
- to 1 kOhm
Pulse operation
Envelope temperature
- to 70 degC
Absolute maximum
Recommended DC supply voltage
170 V
+/-3% example
Recommended DC operating voltage
140 V
At display electrodes
Recommended off-cathode bias
60 to - V
DC operation with bias

Data set 06

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

Supply Voltage Minimum
170 V
Published datasheet value
Extinguishing Voltage Minimum
120 V
Published datasheet value
Cathode/Anode Current Minimum
1 mA
Published datasheet value

Other

Ignition Voltage Maximum
160 V
Published datasheet value
Cathode/Anode Current Maximum
2.5 mA
Published datasheet value

Data set 07

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Ignition voltage
160 V
Maximum/typical threshold shown in source table
Operating glow voltage
140 V
Approximate service voltage
Extinction voltage
120 V
Source table value
Nominal cathode current
2 mA
Main symbol/digit
Ignition voltage
160 V
Typical characteristic
Burning voltage
140 V
Typical glow voltage
Extinction voltage
120 V
Typical characteristic
Life with one digit continuously displayed
5000 to - h
Recommended conditions
Life with changing display
30000 h
Digit changed at least every 100 h

Other

Maximum supply voltage
160 V
Absolute limit table
Cathode current
1 to 2.5 mA
Main symbol/digit continuous range
Maximum peak cathode current
10 mA
Main symbol/digit
Envelope temperature minimum
-20 degC
Operating envelope temperature range
Envelope temperature maximum
70 degC
Operating envelope temperature range
Display characters
+, -, ~, A, V, ohm, %
Translated from French source
Display orientation
front
Viewing orientation
Character height
max 15.5 mm
Display geometry
Maximum tube height
26.5 mm
Mechanical dimension
Maximum tube width/diameter
30 mm
Mechanical dimension as printed
Continuous cathode current
1 to 2.5 mA
Absolute range
Pulse cathode current
4 to 10 mA
Pulse operation; max pulse 20 ms
Cathode-to-cathode voltage
- to 120 V
Absolute maximum
Pulse rise time
80 to - us
Pulse operation
Pulse source internal resistance
- to 1 kOhm
Pulse operation
Envelope temperature
- to 70 degC
Absolute maximum
Recommended DC supply voltage
170 V
+/-3% example
Recommended DC operating voltage
140 V
At display electrodes
Recommended off-cathode bias
60 to - V
DC operation with bias

Data set 08

1973 Nixie Siemens

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Ignition voltage
160 V
Maximum/typical threshold shown in source table
Operating glow voltage
140 V
Approximate service voltage
Extinction voltage
120 V
Source table value
Nominal cathode current
2 mA
Main symbol/digit

Other

Maximum supply voltage
160 V
Absolute limit table
Cathode current
1 to 2.5 mA
Main symbol/digit continuous range
Maximum peak cathode current
10 mA
Main symbol/digit
Envelope temperature minimum
-20 degC
Operating envelope temperature range
Envelope temperature maximum
70 degC
Operating envelope temperature range
Display characters
+, -, ~, A, V, ohm, %
Translated from French source
Display orientation
front
Viewing orientation
Character height
max 15.5 mm
Display geometry
Maximum tube height
26.5 mm
Mechanical dimension
Maximum tube width/diameter
30 mm
Mechanical dimension as printed