Specialized - Thyratron ·Thyratron
Hydrogen thyratron for fast high-voltage, high-current pulse switching in radar modulators, pulse networks, crowbar protection, or related pulsed-power systems.
The 7872 is a three-electrode, hydrogen-filled thyratron de- signed for high-power switching applications. A hydrogen reservoir, with a separate external base connection, promotes long life and permits optimum pressure adjustment for various operating conditions. The control grid is brought out to both a base pin and to a grid ring for flexibility in circuit design. Termination to the grid ring is made in applications where grid lead inductance is critical.
Small-button Noval 9-contact
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.
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.
Heater voltage
6.3 V
Nominal
Peak forward anode voltage
18000 V
Peak inverse anode voltage
18000 V
Peak cathode current
365 A
Average cathode current
250 mA
Current rate of rise
1500 A/us
Anode delay time
0.6 us
Time jitter
0.005 us