The JJ Electronic EL509S is an eight pin octal based version of the EL509 / EL519. This modified version does not have the top plate cap which is instead wired to a pin on the octal base. This tube is rated for 700V and 42 Watts plate dissipation. The JJ EL509 is popularly used in output transformerless OTL amplifiers.


Product Measurements

Item Diameter: 38 mm
Item Height: 116 mm
Body Height: 105 mm
Filament Voltage (Uf): 6.2 V
Filament Current (If): 2 A
Plate Voltage (Ua): ≤ 700 V, 160 V typical
Plate Current (Ia): 200 mA
Grid Voltage 1 (Ug1): -30 V typical
Grid Voltage 2 (Ug2): ≤ 700 V, 160 V typical
Grid Current 2 (Ig2): 10 mA
Saturation voltage (Usat): 30 VAC
Grid 2 dissipation (Wg2): ≤ 40 W
Heater to cathode voltage (Uk/f): ≤ 150 V
Cathode Current (Ik): ≤ 500 mA
Grid to Plate Capacitance (ca/g): 3 pF

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • EL509S Octal Base Power Tube
Categories
Year
  • 2026

Product safety information may be available here.

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Tempe, AZ, United States
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