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Nixie ·Nixie

Z505S

Cold-cathode bidirectional decade selector/counter designed for electronic counting, sequencing, and switching functions.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Z505S is a cold-cathode bi-directional decade selector/counter, classified as Nixie for this batch. The supplied datasheet was reviewed for operating conditions, ratings, and display/counting characteristics.

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
1 mA

Cold-cathode discharge/display section; explicit published limits and operating data are retained as section 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

1967 Nixie La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

  • Ignition/Starting Voltage

    400 V

    Published ignition/start value

  • Maintaining Voltage

    260 V

    Published maintaining/burning value

  • Minimum Cathode Current

    0.6 mA

    Published minimum

Other

  • Recommended/Minimum Supply Voltage

    475 V

    Published operating condition

  • Maximum Cathode Current

    1 mA

    Published maximum/average maximum

  • Maximum Counting Frequency

    50 kHz

    Published general characteristic

  • Anode Load Resistance

    330 kOhm

    At 475 V anode supply

  • Anode Current

    800 uA

    At 475 V anode supply

Data set 02

1969 Nixie Mullard

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

  • Supply Voltage

    500 V

    Published operating data

  • Maximum Counting Speed

    50 kHz

    Published datasheet value

  • Anode Supply Voltage Minimum

    400 V

    Published datasheet value

Other

  • Anode Supply Voltage Maximum

    1000 V

    Published datasheet value

Data set 03

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • Supply Voltage

    500 V

    Published datasheet value

  • Maximum Counting Speed

    50 kHz

    Published datasheet value

  • Anode Supply Voltage Maximum

    1000 V

    Published datasheet value

Characteristic

  • Anode Supply Voltage Minimum

    400 V

    Published datasheet value

  • Maintaining Voltage Minimum

    240 V

    Published datasheet value

  • Maintaining Voltage Maximum

    275 V

    Published datasheet value

Data set 04

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • Maximum counting speed

    50 kHz

  • Supply voltage

    500 V

  • Recommended cathode current

    0.8 mA

  • Maintaining voltage minimum

    240 V

  • Maintaining voltage maximum

    275 V