Ampera
ECL84-T
Triode · IHT · 9-pin Noval · 1960
“Triode section.”
Medium-gain triode for voltage amplification applications
Datasheet ↗SPICE
GAIN FACTOR50
PLATE IMPEDANCE25.0kΩ
TRANSCONDUCTANCE2.0mA/V
Cgk2.2pF
Cgp1.5pF
Cpk0.50pF
GAIN50%
POWER3%
DRIVE75%
LINEARITY75%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The ECL84-T is a indirectly-heated triode from Philips, introduced around 1960. It provides a gain factor (μ) of 50 with 25.0kΩ plate resistance. Commonly used in preamp applications. Triode section.
APPLICATIONS
Voltage amplifier
Generic triode preamp stage
• Hi-Fi stereo• Headphone amp
HISTORY
Introduced1960ManufacturerPhilipsEquivalents6DX8
Late ProductionSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.35A
Max Plate Voltage200V
Max Power1W
Sensitivity2 mA/V
Gain Factor50
Internal Impedance25.0kΩ
Pinout9-pin Noval
Era1960
RarityCommon
Input Capacitance2.2pF
Miller Capacitance1.5pF
Output Capacitance0.5pF