ZM1250

Flat-pack gas-discharge 7×5 dot-matrix display capable of alphanumeric and symbolic presentation, with a separate left-hand decimal point. It supports both DC and dynamic drive and provides a bright, wide-angle electronic display.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

The ZM1250 is a flat-pack gas-discharge 7 x 5 dot-matrix display capable of alphanumeric and symbolic presentation, with a separate left-hand decimal point. It supports both DC and dynamic drive and provides a bright wide-angle display.

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: 220 V
Max cathode current: 3 mA
Regulator starting voltage: 220 V
Regulator maintaining voltage: 140 V

Published Mullard cold-cathode ratings and operating characteristics promoted where applicable; additional trigger/display values retained as parameters.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Nixie

Construction

Matrix dimensions
7 x 5 dots
Character height
9.8 mm
Character width
6.8 mm

Other

Minimum supply voltage
220 V
Tube dissipation nominal
400 mW
Supply power per tube including sharing resistors
800 mW
Matrix cathode current peak minimum
1 mA
Matrix cathode current peak maximum
3 mA
Matrix cathode current average maximum over 10 ms
0.3 mA
Decimal-point cathode current peak minimum
3 mA
Decimal-point cathode current peak maximum
6 mA
Decimal-point cathode current average maximum over 10 ms
0.6 mA
Pulsed frequency minimum
800 Hz
DynamicDrive
Pulse width minimum
100 us
DynamicDrive
Envelope temperature maximum
70 C
Envelope temperature minimum
-50 C

Characteristics

Ignition voltage minimum
220 V
Maintaining voltage minimum at 1.5 mA peak
120 V
Maintaining voltage nominal at 1.5 mA peak
140 V
Cathode extinction voltage
115 V

Application

Application
Alphanumeric / symbolic dot-matrix display