Ampera
EL803
Pentode · IHT · 9-pin Noval · 1958
“Audio output pentode.”
Small-signal pentode for low-noise voltage amplification
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER23%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The EL803 is a indirectly-heated pentode from Valvo, introduced around 1958. Commonly used in power applications. Audio output pentode.
HISTORY
Introduced1958ManufacturerValvoEquivalentsNone
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.76A
Max Plate Voltage250V
Max Power9W
Sensitivity12 mA/V
Gain Factor—
Internal Impedance—
Pinout9-pin Noval
Era1958
RarityModerate
Input Capacitance10pF
Miller Capacitance0.8pF
Output Capacitance5pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.