1-V

Rectifier — UX4

RCA

Known Equivalents & Substitutes

CV1999NU-1VAD6Z3

Electrical Specifications

Absolute Maximum

Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max)500V

Rectifier

Peak Inverse VoltagePeak Inverse Voltage (max)1,000V

AC Plate Voltage (RMS, max)AC Plate Voltage (RMS, max)325V

DC Output Current (max)DC Output Current (max)45mA

Peak Anode Current (surge)Peak Plate Current (max)270mA

Min Series Resistance (C-input)Min Series Resistance (at 325V RMS)

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.3A

Notes

The 1-V supersedes the mercury-vapor type 1 and is interchangeable with it.
Indirectly heated: coated unipotential cathode with separate heater.
DC heater-cathode potential must not exceed 500V.
Under no condition of operation should the heater voltage fluctuate beyond 6.3V +/- 10% (max 7.5V).
Typical operation with condenser-input filter: at 117V AC plate (RMS), supply impedance 0 Ohm, DC output current 45 mA max. At 150V AC plate, supply impedance 30 Ohm min, DC output 45 mA max. At 325V AC plate, supply impedance 75 Ohm min, DC output 45 mA max.
When a filter-input condenser larger than 40 uF is used, it may be necessary to use more plate-supply impedance than the minimum value shown to limit peak plate current to 270 mA.
Tube drop approximately 20V at 90 mA DC (per TDSL).

Pin Layout — UX4

1Heater

2Plate (Anode)

3Cathode

4Heater

Socket-Compatible Tubes ⚠ Not electrically compatible

References