Ampera
8233
Pentode · IHT · 9-pin Magnoval · 1958
“E55L by another name. Frame-grid legend.”
Power pentode delivering up to 10W in pentode, UL, or triode mode
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER25%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The 8233 is a indirectly-heated pentode from Philips·Mullard, introduced around 1958. Commonly used in power / driver applications. E55L by another name. Frame-grid legend.
APPLICATIONS
Power output
Generic pentode power / driver stage
VS E55L
Pd 0%Full comparison →
HISTORY
Introduced1958ManufacturerPhilips·MullardEquivalentsE55L, CV5808
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.6A
Max Plate Voltage300V
Max Power10W
Sensitivity45 mA/V
Gain Factor—
Internal Impedance—
Pinout9-pin Magnoval
Era1958
RaritySought-after
Input Capacitance14pF
Miller Capacitance0.7pF
Output Capacitance10pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.