Ampera
E810F
Pentode · IHT · 9-pin Noval · 1960
“Frame-grid. Phenomenal transconductance.”
Small-signal pentode for low-noise voltage amplification
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN57%
POWER15%
DRIVE99%
LINEARITY72%
EXECUTIVE SUMMARY
The E810F is a indirectly-heated pentode from Philips·Valvo, introduced around 1960. It provides a gain factor (μ) of 57 with 1200Ω plate resistance. Commonly used in preamp / driver applications. Frame-grid. Phenomenal transconductance.
HISTORY
Introduced1960ManufacturerPhilips·ValvoEquivalents7788
Late ProductionSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.34A
Max Plate Voltage250V
Max Power6W
Sensitivity50 mA/V
Gain Factor57
Internal Impedance1.2kΩ
Pinout9-pin Noval
Era1960
RaritySought-after
Input Capacitance9.5pF
Miller Capacitance0.035pF
Output Capacitance5pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.