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BTH CV1144 / BT19 / NTG5 mercury vapour thyratron


Size This valve measures 150x55mm overall and has a 4-pin base.


Filament voltage 2.5V
Filament current 5A
Minimum heating time 20s
Max peak forward and inverse anode voltage 1kV
Max peak anode current 2A
(1A below 25Hz)
Mean anode current 500mA
Max instantaneous grid current 100mA


Pin Function
1 n/c
2 Grid
3 Filament
4 Filament
TC Anode

Top quarter view

BT19 label


CV1144 / NGT5