Z71U

Cold-cathode trigger and pulse switching tube. Available source classification establishes gas-discharge trigger service without enough detail for a narrower operating description.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Z71U is a Other device. Subminiature cold-cathode trigger tube with two positive-voltage starters.

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

TriggerPulseSwitch

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Subminiature cold-cathode trigger tube with two positive-voltage starters.

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

TriggerPulseSwitch

Characteristic

Starter breakdown voltage at 130 V supply
73 to 90 V
Maximum starter transfer current
- to 100 uA
Anode-cathode breakdown voltage at starter 0 V
175 to - V
Minimum
Anode maintaining voltage at 5 mA
56 to 70 V

Other

Anode supply voltage range
125 to 165 V
Maximum anode supply voltage
- to 165 V
Maximum peak cathode current
- to 12 mA