Nixie ·Nixie
Gas-filled cold-cathode Nixie numerical indicator designed for decimal readout by selective glow discharge of shaped numeral cathodes.
Z550M is a cold-cathode top-viewing numerical indicator, classified as Nixie for this batch. The supplied datasheet was reviewed for operating conditions, ratings, and display/counting characteristics.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Cold-cathode gas-filled decimal numerical indicator tube.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
PeakAnodeVoltage
150 V ac
Published source value
MaintainingVoltage
84 V
Published source value
StarterCurrent
50 uA
Published source value
Data set 02
Published operating points and test conditions from this source.
Display digits
10 count
Supply type
Unsmoothed rectified or DC
Starter-selection overdrive
5 to - V
Selected starter above remaining starters
Common starter-bias tolerance
- to 5 V
Relative to anode potential
Data set 03
Published operating points and test conditions from this source.
Supply Voltage
90 V
Published datasheet value
Maximum/Normal Cathode Current
3 mA
Published datasheet value
Transformer Secondary Voltage
110 V
Published datasheet value
Cathode Resistor
10 kOhm
Published datasheet value
Numeral Height
3 mm
Published datasheet value
Maintaining/Running Voltage
84 V
Published datasheet value
Minimum Cathode/Anode Current
3 mA
Published datasheet value
Data set 04
Published operating points and test conditions from this source.
Cathode current
4 mA
Anode operating voltage
84 V