Ampera
EC86
Dual Triode · IHT · 9-pin Noval · 1960
“UHF frame-grid.”
Medium-gain triode for driver and line stage applications
Datasheet ↗SPICE
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN52%
POWER6%
DRIVE95%
LINEARITY74%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The EC86 is a dual indirectly-heated triode from Siemens, introduced around 1960. It provides a gain factor (μ) of 52 with 5000Ω plate resistance. Commonly used in uhf / preamp applications. UHF frame-grid.
APPLICATIONS
Voltage amplifierHigh-gain preampPhase splitter
Generic triode uhf / preamp stage
• Hi-Fi stereo• Headphone amp• Studio/recording
HISTORY
Introduced1960ManufacturerSiemensEquivalents6CM4
Late ProductionSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.2A
Max Plate Voltage200V
Max Power2.2W
Sensitivity10.5 mA/V
Gain Factor52
Internal Impedance5.0kΩ
Pinout9-pin Noval
Era1960
RarityModerate
Input Capacitance3pF
Miller Capacitance0.2pF
Output Capacitance2.5pF