673

Rectifier — DHT — B4

RCA

Known Equivalents & Substitutes

No known equivalents. If you know of any, use the ⚑ Report Issue button above.

Similar Tubes (Not Drop-In Compatible)

Another mercury-vapor half-wave rectifier — different ratings and base

Electrical Specifications

Rectifier

Peak Inverse VoltagePeak Inverse Voltage (max)10,000V

Voltage Drop (typical)Tube Voltage Drop (approx.)10V

DC Output Current (max)Average Anode Current (max)1,750mA

other

Peak Anode Current (max)Peak Anode Current (max)7,000mA

Heater

Heater VoltageFilament Voltage5V

Heater CurrentFilament Current10A

Notes

Mercury-vapor rectifier — requires a 30-second minimum warm-up at rated filament voltage before applying anode voltage.
Condensed-mercury temperature must be maintained between 20-60°C (or 20-50°C for reduced ratings). External heating or cooling may be required.
Peak inverse voltage rating is 10,000 V (20-60°C range) or 15,000 V (20-50°C range).
Tube voltage drop approximately 10 V.
Used in half-wave, full-wave, and polyphase rectifier circuits for transmitter power supplies.

Pin Layout — B4

1No Connection

2Filament,Cathode

3Filament

4No Connection

TC

References