Ampera
CV591
Pentode · IHT · Octal · 1942
“Military 6SJ7.”
Small-signal pentode for low-noise voltage amplification
Datasheet ↗SPICE
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER6%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The CV591 is a indirectly-heated pentode from Mullard, introduced around 1942. Commonly used in preamp applications. Military 6SJ7.
APPLICATIONS
Voltage amplifier
Generic pentode preamp stage
HISTORY
Introduced1942ManufacturerMullardEquivalents6SJ7 mil
Pre-WarSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.3A
Max Plate Voltage300V
Max Power2.5W
Sensitivity1.65 mA/V
Gain Factor—
Internal Impedance—
PinoutOctal
Era1942
RarityModerate
Input Capacitance5pF
Miller Capacitance0.01pF
Output Capacitance4pF