PL5544

Directly heated xenon-filled thyratron triode for motor control and ignitron-firing service. Its heavy filament supports substantial controlled current.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 2.5 V / 12 A

Description

Directly heated xenon-filled thyratron triode for motor control and ignitron-firing service.

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: 2.5 V
Nominal heater current: 12 A
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

IgnitronPowerSwitch

X-ray radiationInterelectrode capacitances

Max cathode current: 3.2 A

Promoted only where the locked schema has a direct semantic match; additional CRT, regulator, thyratron, pulse, capacitance, and operating values are retained in TUBE_SECTION_PARAMETER.

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 V3

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Characteristic

Arc voltage drop
12 V
Thyratron
Ionization time
10 µs
Thyratron
Deionization time
40 µs
Thyratron
Deionization time at alternate grid condition
400 µs
GridBiasAlternate

Other

Peak forward anode voltage maximum
1500 V
Thyratron
Peak inverse anode voltage maximum
1500 V
Thyratron
Peak cathode/anode current maximum
40 A
Thyratron
Average cathode/anode current maximum
3.2 A
Thyratron
Surge current maximum
560 A
0.1Second

Construction

Gas/fill
Xenon
Thyratron

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

IgnitronPowerSwitch

Characteristics

Heater voltage
2.5 V
Heater current
12 A
Heating : direct Vf
5 a
Heating : direct Vf = 2,5 V + 5%
Capacitances Cag
0.8 a
Capacitances Cag = 0,8 pPF
Capacités c B 45 pF
45 a
Capacités c B 45 pF
Tyopical characteristics Varc
12 a
Tyopical characteristics Varc = 12 V