7709

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

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

7709 is a Other device in the supplied Amperex literature. Cold-cathode gas-filled trigger tube for pulse/control circuits; source explicitly co-designates the numeric and Z-series type.

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.

Cold-cathode gas-filled trigger tube for pulse/control circuits; source explicitly co-designates the numeric and Z-series type.

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 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

TriggerPulseSwitch

Other

Anode voltage range
200 to 310 V
DC
Peak cathode current
16 mA
Recommended priming resistor
18 MOhm
Cathode current range
2 to 4 mA
DC

Characteristic

Starter-to-cathode breakdown voltage
137 to 153 V
Anode-to-cathode sustaining voltage
111 to 121 V
Anode-to-cathode breakdown voltage
>325 V