12SJ7
Pentode · IHT · Octal · 1938
“12V version of 6SJ7.”
Small-signal pentode for low-noise voltage amplification
Datasheet ↗SPICE
TRANSCONDUCTANCE0mA/V
GAIN0%
POWER6%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The 12SJ7 is a indirectly-heated pentode from RCA, introduced around 1938. Commonly used in preamp applications. 12V version of 6SJ7.
APPLICATIONS
Voltage amplifier
Generic pentode preamp stage
VS 6SJ7
Pd 0%Full comparison →
HISTORY
Introduced1938ManufacturerRCAEquivalents6SJ7
Pre-WarSPECIFICATIONS
Heater Voltage12.6V
Heater Current0.15A
Max Plate Voltage300V
Max Power2.5W
Sensitivity1.65 mA/V
Gain Factor—
Internal Impedance—
PinoutOctal
Era1938
RarityCommon