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Vacuum Tube - EL509, JJ Electronics
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.
Matched versions of this tube use Apex Matching
RoHS Compliant
Accessory Items:
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Apex Matched Pair | T-EL509-S-JJ-MP | 609722123082 | |
| Single | T-EL509-S-JJ | 609722123075 | EL509S |
| Body Height | 105 mm | ||
| Cathode Current (Ik) | ≤ 500 mA | ||
| Filament Current (If) | 2 A | ||
| Filament Voltage (Uf) | 6.2 V | ||
| Grid 2 dissipation (Wg2) | ≤ 40 W | ||
| Grid Current 2 (Ig2) | 10 mA | ||
| Grid Voltage 1 (Ug1) | -30 V typical | ||
| Grid Voltage 2 (Ug2) | ≤ 700 V, 160 V typical | ||
| Grid to Plate Capacitance (ca/g) | 3 pF | ||
| Heater to cathode voltage (Uk/f) | ≤ 150 V | ||
| Item Diameter | 38 mm | ||
| Item Height | 116 mm | ||
| Plate Current (Ia) | 200 mA | ||
| Plate Voltage (Ua) | ≤ 700 V, 160 V typical | ||
| Saturation voltage (Usat) | 30 VAC | ||
| Packaging Dimensions | Apex Matched Pair version | T-EL509-S-JJ-MP | 5.6 in. × 3.3 in. × 1.6 in. |
| Single version | T-EL509-S-JJ | 1.6 in. × 1.6 in. × 5.8 in. | |
| Weight (Packaging) | Apex Matched Pair version | T-EL509-S-JJ-MP | 0.3352 lbs. |
| Single version | T-EL509-S-JJ | 0.1676 lbs. |
| T-EL509-S-JJ-MP - Apex Matched Pair version | Body Height | 105 mm |
| Cathode Current (Ik) | ≤ 500 mA | |
| Filament Current (If) | 2 A | |
| Filament Voltage (Uf) | 6.2 V | |
| Grid 2 dissipation (Wg2) | ≤ 40 W | |
| Grid Current 2 (Ig2) | 10 mA | |
| Grid Voltage 1 (Ug1) | -30 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 700 V, 160 V typical | |
| Grid to Plate Capacitance (ca/g) | 3 pF | |
| Heater to cathode voltage (Uk/f) | ≤ 150 V | |
| Item Diameter | 38 mm | |
| Item Height | 116 mm | |
| Plate Current (Ia) | 200 mA | |
| Plate Voltage (Ua) | ≤ 700 V, 160 V typical | |
| Saturation voltage (Usat) | 30 VAC | |
| T-EL509-S-JJ - Single version | Body Height | 105 mm |
| Cathode Current (Ik) | ≤ 500 mA | |
| Filament Current (If) | 2 A | |
| Filament Voltage (Uf) | 6.2 V | |
| Grid 2 dissipation (Wg2) | ≤ 40 W | |
| Grid Current 2 (Ig2) | 10 mA | |
| Grid Voltage 1 (Ug1) | -30 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 700 V, 160 V typical | |
| Grid to Plate Capacitance (ca/g) | 3 pF | |
| Heater to cathode voltage (Uk/f) | ≤ 150 V | |
| Item Diameter | 38 mm | |
| Item Height | 116 mm | |
| Plate Current (Ia) | 200 mA | |
| Plate Voltage (Ua) | ≤ 700 V, 160 V typical | |
| Saturation voltage (Usat) | 30 VAC |
 Specification Sheet | All Models |
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