12J5GT

Small Signal Triode — Octal

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

↗ r-type.org ↗ TDSL ↗ Radiomuseum

Known Equivalents & Substitutes

12J5CV534CV535VT135VT135A12J5WGT6J5

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Max Plate Voltage300V

Anode Dissipation (max)Plate Dissipation (max)2.5W

Cathode Current (max)Total Cathode Current (max)20mA

Heater-to-Cathode Voltage (max)Heater-Cathode Voltage (max)90V

Max Grid Resistor

Notes

Electrically identical to the 6J5/6J5GT except for heater voltage (12.6V vs 6.3V).
Heater-cathode voltage should be kept to a minimum if direct connection is not possible (GE datasheet). Max Vhk = 90V DC.
Pin 1 (shell) should be connected to cathode per GE datasheet.
The d-c resistance in the grid circuit under maximum rated conditions should not exceed 1.0 megohm.

Pin Layout — Octal

1Shell

2Heater

3Plate

4

Socket-Compatible Tubes ⚠ Not electrically compatible

12AV5 12AX4 12DQ6 12E1 12W6GT 1H4 25L6GT 350B 367A 5881 5C4S 5CU4 6550 6A5G 6B4G

References