Specialized - Switching Tube ·Thyratron
Cold-cathode trigger tube for pulse and control circuits. Gas-discharge operation provides abrupt heaterless switching.
The Philips PL1267 is a cold-cathode trigger tube for relay, counting, welding-timer and power-switching circuits.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
No fixed ratings are recorded for this section.
Cold-cathode gas-filled trigger tube for relay/control service.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Anode Ignition Voltage Typical
255 V
Starter Ignition Voltage Minimum
73 V
Starter Ignition Voltage Maximum
93 V
Burning Voltage
70 V
Peak Anode Current
100 mA
Data set 02
Published operating points and test conditions from this source.
AC supply voltage
117 V RMS
Maximum average cathode current
- to 25 mA
Tav<=15s
Anode ignition voltage at starter 0 V
255 V
Starter ignition voltage
73 to 93 V
Anode burning voltage at 25 mA
70 V
Starter burning voltage
60 V