6W4

Name: 6W4
Brand: Tung-Sol

Rectifier — Octal — Tung-Sol

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

↗ TDSL ↗ Radiomuseum

Known Equivalents & Substitutes

6W4GT6W4GTACV732

Electrical Specifications

Absolute Maximum

Anode Dissipation (max)Maximum Plate Dissipation3.5W

Heater-to-Cathode Voltage (max)Max Heater-Cathode Voltage (heater negative, DC)500V

Rectifier

Peak Inverse VoltageMaximum Peak Inverse Plate Voltage (absolute)3,850V

Voltage Drop (typical)Tube Voltage Drop (at 250 mA)21

Notes

Base is 4CG (Short Intermediate Shell 6-Pin Octal). Pins 1, 3, and 8 should not be used as tie points. Pin 2 is an internal connection.
TDSL lists CV732 as a close/identical substitute and 6W4GTA as a different rating/performance substitute. 25W4GT is the series-string heater equivalent (25V).
Brans Vademecum table VIIb cross-lists 6W4 with CV732.
MIL-HDBK-213A classifies as 'Receiving full wave rectifier' and lists 6W4GTA as the other number for 6W4GT. Despite the MIL classification as 'full wave', the 6W4GT is a half-wave rectifier/damper diode.
GE Essential Characteristics lists max plate dissipation as 3.5 W for TV damper service.
The Brans damper group (table VIIb via 6AX4GT) lists many damper types in the same equivalence group including 6AX4GT, 6DE4, 6DQ4, 6U4GT, and 6W4(GT), but these have different PIV ratings and may not be direct substitutes in all circuits.
Heater-cathode voltage limits: 500 V DC (heater negative), 2300 V peak (heater negative), 100 V DC (heater positive), 300 V peak (heater positive).

Pin Layout — Octal

1No Connection

2Internal Connection

3No Connection

4

References

https://frank.pocnet.net/sheets/127/6/6W4GT.pdf