Ampera
EF184
Pentode · IHT · 9-pin Noval · 1960
“High-Gm sharp cutoff pentode.”
Small-signal pentode for low-noise voltage amplification
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER5%
DRIVE0%
LINEARITY75%
EXECUTIVE SUMMARY
The EF184 is a indirectly-heated pentode from Philips, introduced around 1960. Commonly used in preamp / rf applications. High-Gm sharp cutoff pentode.
APPLICATIONS
Voltage amplifier
Generic pentode preamp / rf stage
HISTORY
Introduced1960ManufacturerPhilipsEquivalents6EJ7
Late ProductionSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.2A
Max Plate Voltage200V
Max Power2W
Sensitivity15 mA/V
Gain Factor—
Internal Impedance350.0kΩ
Pinout9-pin Noval
Era1960
RarityCommon
Input Capacitance5.5pF
Miller Capacitance0.03pF
Output Capacitance3pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.