CD55

Matsushita top-view cold-cathode Nixie displaying red digits 0–9 with low current, low drive voltage, and simple interface circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Japanese datasheet for the CD55 cold-cathode numeral display tube. It displays digits 0 through 9 in red at the top of the tube; the digit arrangement is designed for clear outlines and a sharp display. The datasheet emphasizes low tube current, low drive voltage, and simple circuitry. Applications include industrial control systems, electronic computers, counters, channel indicators, elevator position displays, and other indicating equipment.

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: -
Socket code: B13B
Base pins: 13
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 cathode current: 2 mA

Cold-cathode Nixie/display-discharge section. Maximum cathode current promoted from peak absolute-maximum rating.

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

1966 Nixie Matsushita

Published operating points and test conditions from this source.

SECTION 1

Nixie

Display

Display content
Digits 0-9
Top-view numeral display
Display color
Red

Characteristics

Cathode type
Cold cathode
Discharge starting voltage
- to 150 V
Maximum
Discharge extinction voltage
120 to - V
Minimum

Other

Plate supply voltage
160 to - Vdc
Minimum specified plate supply
Cathode current
0.6 to 1 mA
Plate supply 160 Vdc; plate series resistance 15 kΩ
Cathode dissipation
- to 0.2 W
Each cathode
Peak cathode current
- to 2 mA
Absolute maximum
Average cathode current
0.5 to 1.5 mA
Absolute maximum range
Ambient temperature
-65 to 70 °C
Operating ambient range
Recommended plate series resistance
15 kΩ
Plate supply 160 Vdc
Recommended plate series resistance
57 kΩ
Plate supply 190 Vdc
Recommended plate series resistance
100 kΩ
Plate supply 220 Vdc
Recommended plate series resistance
143 kΩ
Plate supply 250 Vdc
Recommended plate series resistance
186 kΩ
Plate supply 280 Vdc
Minimum cathode bias voltage
22 to - V
When cathode-bias voltage is applied
Bulb width maximum
- to 29.5 mm
From dimensional drawing
Overall height maximum
- to 30 mm
From dimensional drawing

Base

Socket requirement
Special 13-pin socket
Datasheet notes use of a special 13-pin socket