6C4P — Rectifier, Noval | Tubeofile | Tubeofile

6C4P

Rectifier — Noval

Data: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.

↗ Radiomuseum

Known Equivalents & Substitutes

6X46X4WEZ906Z31CV4005

Similar Tubes (Not Drop-In Compatible)

12X4

12.6V heater version — same electricals but incompatible heater voltage

6C5S

Soviet 6X5GT equivalent — similar function but Octal base, not Noval

Electrical Specifications

Absolute Maximum

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max DC)450V

Rectifier

Peak Inverse VoltagePeak Inverse Voltage1,250V

Voltage Drop (typical)Tube Voltage Drop (at 70mA)22V

Max DC Output Current (total, not per-anode)Max DC Output Current70mA

Notes

Cyrillic designation: 6Ц4П. Foreign_substitutes.json confirms: 6C4P → 6X4, 6Z31, EZ90.
Also available as 6C4P-EV (6Ц4П-ЕВ) — military extended-life variant.
From 6X4 Tung-Sol datasheet: Vh=6.3V, Ih=600mA, PIV=1250V, DC output 70mA max per plate.
Tube voltage drop approximately 22V at 70mA per plate.
The 6X4 is identical to the 12X4 except for heater ratings.

Pin Layout — Noval

1Anode (plate 1)

2No Connection

3No Connection

Socket-Compatible Tubes ⚠ Not electrically compatible

6203 6S4P 6V3 AL860 EC88

References

https://frank.pocnet.net/sheets/127/6/6X4.pdf
https://www.radiomuseum.org/tubes/tube_6c4p.html

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current0.6A

4Heater

5Heater

6Anode (plate 2)

7Cathode

8No Connection

9No Connection