Electro Harmonix EF86

EF86/EF806SG
pin # Electrode name
1 Grid 2
2,7 Screen
3 Cathode
4,5 Heater
6 Plate
8 Grid 3
9 Grid 1
Electrical data
Parameters, measures Rate
Not less Not more
Comments
Heater current, mA 185 215 1
Grid reverse current, µA - 0.1 1,2,3,4,5,6
Plate current, mA 2.6 3.8 1,2,3,4,5
Grid2 current, mA 0.45 0.75 1,2,3,4,5
Transconductance, mA/V 1.6 2.4 1,2,3,4,5
Cathode to heater leakage current, µA - 10 1,7
Comments:
1. Heater voltage 6.3v
2. Plate voltage 250v
3. Grid2 voltage 140V
4. Grid3 voltage 0V
5. Resistance in cathode circuit, 500 Ohm
6. Resistance in grid1 circuit, 3 MOhm
7. Cathode-heater voltage, ±100V
Limited values
Not less Not more
Heater voltage, V 5.7 6.9
Plate voltage, V - 300
Grid2 voltage, V - 200
Cathode-heater voltage (positive and negative), V - 100
Cathode current, mA - 6
Plate dissipation power, W - 1
Grid2 dissipation power, W - 0.2
Grid1 circuit resistance, MOhm - 3
Envelope temperature, ºC - 170
Interelectrode capacitances:
Input capacitance (nominal), pf 4.0
Output capacitance (nominal), pf 5.5
Transfer capacitance (not more), pf 0.05