6SJ7
Pentode · IHT · Octal · 1938
“Classic octal preamp pentode.”
Small-signal pentode for low-noise voltage amplification
Datasheet ↗SPICE
TRANSCONDUCTANCE0mA/V
GAIN0%
POWER6%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The 6SJ7 is a indirectly-heated pentode from RCA·Sylvania, introduced around 1938. Commonly used in preamp applications. Classic octal preamp pentode.
APPLICATIONS
Voltage amplifier
Generic pentode preamp stage
HISTORY
Introduced1938ManufacturerRCA·SylvaniaEquivalentsEF37A
Pre-WarSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.3A
Max Plate Voltage300V
Max Power2.5W
Sensitivity1.65 mA/V
Gain Factor—
Internal Impedance—
PinoutOctal
Era1938
RarityCommon