8433

Gas-filled cold-cathode decade counting, switching, and display tube for forward and reverse counting with ten separately brought-out cathodes.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Valvo 8433/ZM1070 is a gas-filled cold-cathode decade counting and display tube for forward and reverse counting. Ten separately brought-out cathodes provide a glow indication of the active count position.

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: Special 13-pin
Socket code: B13B
Base pins: 13
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Special 13-pin - 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

Regulator minimum current: 250 mA
Regulator maximum current: 525 mA
Regulator maintaining voltage: 195 V

Cold-cathode decade-counting discharge structure.

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

Other

Recommended Anode Supply Voltage
475 V
Recommended Anode Resistor
820000 ohm
Nominal Anode Current
340 uA
Guide Bias Supply Voltage
40 V
Positive
Guide Pulse Amplitude
100 V
Maximum Supply Voltage
550 V
Maximum Cathode Current
525 uA
Maximum Counting Rate
50 kHz

Characteristics

Minimum Supply Voltage
375 V
Nominal Maintaining Voltage
195 V
VaSupply=475V; Ra=820k
Minimum Cathode Current
250 uA
Minimum Time Between Input Pulses
200 us
Minimum Discharge Period
60 us
EachGuideOrMainCathode

Data set 02

1965 Nixie Valvo

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Maximum counting frequency
5 kHz
At 25 C
Minimum pulse spacing
200 us
At 25 C
Minimum discharge duration
60 us
Any counting cathode
Counting signal voltage
-45 V
For kA/kB
Reset voltage
-225 to -120 V
Published range
Burning voltage
195 V
At 475 V supply and 820 kOhm anode resistor

Other

Anode supply voltage
375 to 550 V
Absolute range
Supply time constant
1 to - ms
Minimum
Counting-cathode bias
35 to 60 V
For kA/kB
Voltage between counting cathodes
- to 140 V
Absolute maximum except reset
Maximum negative bias on any output cathode
- to 20 V
Absolute maximum
Average cathode current
0.25 to 0.525 mA
Absolute range
Ambient temperature
- to 50 degC
Absolute maximum
Recommended anode supply voltage
475 V
Typical circuit
Recommended anode resistor
820 kOhm
Typical circuit
Recommended anode current
0.34 mA
Typical circuit
Counting pulse amplitude
-100 V
Typical circuit
Counting pulse duration
75 us
Typical circuit
Counting cathode bias
40 V
kA/kB
Output pulse amplitude
23 to 35 V
Typical circuit