6BJ3

Rectifier — Duodekal

General Electric

Known Equivalents & Substitutes

No known equivalents. If you know of any, use the ⚑ Report Issue button above.

Similar Tubes (Not Drop-In Compatible)

6AX3

Sams lists as substitute — same Duodecar base family, verify pin compatibility and ratings before substituting

Same Duodecar 12-pin base and pinout but higher ratings (PIV 5000V vs 3300V, DC current 200mA vs 140mA, Pa 6.5W vs 4W)

Same Duodecar base and active pin functions but higher heater current (1.8A vs 1.2A) and higher ratings (PIV 5000V, Ia 350mA)

Electrical Specifications

Absolute Maximum

Anode Dissipation (max)Plate Dissipation (max)4W

Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max peak, heater negative)3,300V

Rectifier

Peak Inverse VoltagePeak Inverse Plate Voltage3,300V

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

Notes

Base is Small-Button Duodecar 12-Pin (JEDEC E12-70), basing designation EIA 12BL. T-9 glass envelope.
Socket terminals 5, 6, 8, and 9 should not be used as tie points.
PIV rating of 3300V applies to operation in a 525-line, 30-frame TV system where the duty cycle of the voltage pulse does not exceed 15% of one horizontal scanning cycle.
Voltage drop is 21V at 250 mA DC — relatively low for a damper diode, making it attractive for audio PSU use.
Maximum heater-cathode voltage is very high: 3300V peak (heater negative) / 300V peak (heater positive), with DC component limits of 600V negative / 100V positive.
Compactron series tube — General Electric created the Compactron format. Also produced by Sylvania and RCA.

Pin Layout — Duodekal

1Heater

Socket-Compatible Tubes ⚠ Not electrically compatible

References

DC Output Current (max)

140mA

Peak Anode Current (surge)Steady-State Peak Plate Current840mA

Heater

Heater VoltageHeater Voltage6.3V

Heater CurrentHeater Current1.2A

No Connection

3No Connection

4Plate

5No Connection

6No Connection

7Cathode

8No Connection

9No Connection

10Plate

11No Connection

12Heater