217C

Rectifier — DHT — Jumbo4

General Electric

Known Equivalents & Substitutes

UV217C38117

Similar Tubes (Not Drop-In Compatible)

3B24W

Related half-wave rectifier listed alongside 217C datasheets on TDSL — different ratings

CG-2936A

Normally replaceable, slightly different ratings per radiomuseum

Electrical Specifications

Rectifier

Peak Inverse VoltagePeak Inverse Voltage7,500V

DC Output Current (max)DC Output Current (max)150mA

Peak Anode Current (surge)Peak Plate Current600mA

Heater

Heater VoltageFilament Voltage10V

Heater CurrentFilament Current3.25A

Notes

Directly heated filament cathode — observe warm-up time before applying plate voltage.
Top contact (cap) is the anode connection; the Jumbo 4-pin bayonet base carries filament pins only.
Peak inverse voltage 7500 V makes this suitable for high-voltage transmitter power supplies.
Maximum DC output current is 150 mA with a peak plate current capability of 600 mA.

Pin Layout — Jumbo4

1Filament

2No Connection

3Filament

4No Connection

TCTop Cap —

References