Same octal pinout as 6SN7GT but 12.6V heater vs 25V for 13D1
12SX7GT
Same octal pinout as 6SN7GT but 12.6V heater vs 25V for 13D1
14N7
Same electricals as 6SN7GT but Loctal base vs Octal for 13D1
6SN7GT
Same electricals but 6.3V heater — 13D1 has 25V heater
Electrical Specifications
Absolute Maximum
Anode Voltage (max)Anode Voltage (max)450V
Anode Dissipation (max)Anode Dissipation (max, per section)5W
Cathode Current (max)Cathode Current (max)20mA
Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)100V
Notes
Brimar datasheet states: characteristics are nominally the same as for the type 6SN7GT. Refer to 6SN7GT curves for further information.
25V 0.15A heater — not interchangeable with 6SN7GT (6.3V) without heater supply changes.
Maximum ratings below are taken from the 6SN7GT family data (JJ Electronic), as the Brimar 13D1 datasheet references the 6SN7GT for full characteristics and does not list separate absolute maximum ratings.
Pin Layout — Octal
1Control Grid (section 2)
2Anode (section 2)
3Cathode (section 2)
4
Socket-Compatible Tubes ⚠ Not electrically compatible