Specialized - Thyratron ·Thyratron
Western Electric/RMA cold-cathode trigger and control tube designed for rapid gas-discharge switching in pulse and control circuitry.
443A: Western Electric/RMA cold-cathode trigger/control tube with published ratings and operating data. The complete approved datasheet was read semantically, including ratings, characteristics and operating information.
Medium-shell UX 4-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
Special cold-cathode relay/control section; current and starter/anode voltage data promoted where semantically applicable.
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.
Peak anode voltage
180 V
Peak cathode current
60 mA
Average cathode current
30 mA
Starter breakdown voltage
72 V
Data set 02
Published operating points and test conditions from this source.
Forward peak anode voltage
180 V
Maximum average cathode current
30 mA
Starter breakdown voltage
72 V
Anode voltage drop
69 V