Ampera
KT63
Pentode · IHT · Octal · 1940
“British vintage pentode. Warm midrange.”
Power pentode delivering up to 11W in pentode, UL, or triode mode
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER28%
DRIVE20%
LINEARITY75%
EXECUTIVE SUMMARY
The KT63 is a indirectly-heated pentode from GEC·MOV, introduced around 1940. Commonly used in power (se) applications. British vintage pentode. Warm midrange.
APPLICATIONS
Power output
Generic pentode power (se) stage
HISTORY
Introduced1940ManufacturerGEC·MOVEquivalents6F6
Pre-WarSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.7A
Max Plate Voltage285V
Max Power11W
Sensitivity2.5 mA/V
Gain Factor—
Internal Impedance80.0kΩ
PinoutOctal
Era1940
RarityModerate
Input Capacitance8pF
Miller Capacitance0.3pF
Output Capacitance7.5pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.