217C

Name: 217C
Brand: General Electric

Rectifier — DHT — Jumbo4 — General Electric

Data: MediumMedium quality — at least 60% of universal parameters and pins are present, but some key data is missing. Verify specific values against datasheets before critical use.

↗ TDSL ↗ Radiomuseum

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

Peak Anode Current (surge)Peak Plate Current600mA

Max DC Output Current (total, not per-anode)Max DC Output Current150mA

Heater

Heater VoltageFilament Voltage10V

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

https://frank.yueksel.org/sheets/217/2/217C.pdf