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CV187 halfwave rectifier

Size This valve measures 185x50mm overall and has a 4 pin base.

The prototype of this valve is U19.

Filament voltage 4V
Filament current 3.3A
Max RMS input 2500V
Max PIV 7.1kV
Max PIV (<10µs) 10.0kV
Max mean cathode current 250mA
Max peak anode current 2A
Max reservoir capacitor 4µF
Min limiting external resistance, including effective transformer resistance, in anode circuit 250 ohms


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



Top quarter view Bottom quarter view
This valve was donated

This file was last modified 17:00:35, Friday April 14, 2023