Vacuum Tube - EL509, JJ Electronics

Vacuum Tube - EL509, JJ Electronics

JJ Electronics
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Starting at: $38.95
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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.

Apex Tube Matching
Matched versions of this tube use Apex Matching
RoHS Compliant
SKU:
T-EL509-S-JJ-X
Item ID:
004853
Brand:
JJ Electronics, Apex Matched
Type:
Part Numbers
Single or MatchedOur Part NumberUPC/EANJJ Electronics Part Number
Apex Matched PairT-EL509-S-JJ-MP609722123082
SingleT-EL509-S-JJ609722123075 EL509S
Product Measurements by Type
Body Height105 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 Diameter38 mm
Item Height116 mm
Plate Current (Ia)200 mA
Plate Voltage (Ua)≤ 700 V, 160 V typical
Saturation voltage (Usat)30 VAC
Packaging Information
Packaging DimensionsApex Matched Pair versionT-EL509-S-JJ-MP5.6 in. × 3.3 in. × 1.6 in.
Single versionT-EL509-S-JJ1.6 in. × 1.6 in. × 5.8 in.
Weight (Packaging)Apex Matched Pair versionT-EL509-S-JJ-MP0.346 lbs.
Single versionT-EL509-S-JJ0.173 lbs.
Product Measurements by Item
T-EL509-S-JJ-MP - Apex Matched Pair versionBody Height105 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 Diameter38 mm
Item Height116 mm
Plate Current (Ia)200 mA
Plate Voltage (Ua)≤ 700 V, 160 V typical
Saturation voltage (Usat)30 VAC
T-EL509-S-JJ - Single versionBody Height105 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 Diameter38 mm
Item Height116 mm
Plate Current (Ia)200 mA
Plate Voltage (Ua)≤ 700 V, 160 V typical
Saturation voltage (Usat)30 VAC

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet510.72 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on November 30th, 2020.
BradWbr
December 2nd, 2020
Staff Member
Yes, we ship internationally.
Asked by Anonymous on January 24th, 2021.
BradWbr
January 26th, 2021
Staff Member
The "S" indicates the spiral filament and is simply a production specification. This should be an acceptable replacement for your original tube.

Product Reviews

5.00 out of 5 based on 2 reviews
- August 20th, 2020
5 out of 5

Use these tubes in my The Beast Jr from Transcendent. they work great got the APEX matched, adjusting bias was a breeze and stayed stable after that.
Had an issue with a set, send the tubes back,they were verified and got fast a new set send back to me excellent service. There for i buy all my tubes here.

- May 2nd, 2016
5 out of 5

My Transcendent Mini Beast amplifier uses 6 of these power tubes. It's OTL design does not require bias adjustment and tube matching, so when one of the six power tubes failed after a year, I purchased a single to replace it. So far so good. Hopefully it will last longer than the one it replaced. Antique Electronic Supply packed the tube for shipment perfectly. My order was processed and shipped same day. The tube is priced competitively. It's good to have my tunes back!