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Nixie ·Nixie

Z520M

Very-long-life cold-cathode decade numerical indicator designed for extended-service direct electronic readout.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
13–17 TGL 68-87
Socket code
B13B
Base pins
-
Nominal heater
-

Description

Z520M is a cold-cathode very-long-life decade numerical indicator, classified as Nixie for this batch. The supplied datasheet was reviewed for operating conditions, ratings, and display/counting characteristics.

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
13–17 TGL 68-87
Socket code
B13B
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

13–17 TGL 68-87 - 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
2.5 mA

Cold-cathode gas-filled decimal numerical indicator tube.

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 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • DC supply voltage operating points

    170; 250; 300; 350 V

    StaticOperation

  • Maximum voltage between anode and off cathodes

    - to 120 V

  • Maximum peak cathode current

    - to 15 mA

  • Display digits

    10 count

Data set 02

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Other

  • Supply Voltage

    200 V

    Published datasheet value

  • Maximum/Normal Cathode Current

    6.5 mA

    Published datasheet value

Characteristic

  • Ignition/Starting Voltage

    170 V

    Published datasheet value

  • Minimum Cathode/Anode Current

    3.5 mA

    Published datasheet value

Data set 03

1971 Nixie RFT

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

  • Anode Ignition Voltage

    145 V

    Comparable type Z560M

  • Anode Burning Voltage

    135 V

    Comparable type Z560M

  • Anode Extinction Voltage

    120 V

    Comparable type Z560M

Other

  • Minimum Operating Voltage

    170 V

    Comparable type Z560M

  • Minimum Cathode Current

    1 mA

    Comparable type Z560M

  • Maximum Cathode Current

    2.5 mA

    Comparable type Z560M

  • Peak Cathode Current

    10 mA

    Comparable type Z560M

  • Minimum Ambient Temperature

    -50 degC

    Comparable type Z560M

  • Maximum Ambient Temperature

    70 degC

    Comparable type Z560M

  • Symbol Height

    15.5 mm

    Comparable type Z560M

  • Maximum Viewing Distance

    10 m

    Comparable type Z560M

  • Maximum Bulb Height

    26.5 mm

    Comparable type Z560M

  • Maximum Bulb Diameter

    30.1 mm

    Comparable type Z560M