Vacuum Tube - EL84, JJ Electronics
The JJ Electronic EL84 is a solidly built EL84 / 6BQ5 with excellent tonal qualities. JJ’s rugged construction of this tube offers high reliability without any compromise to the sound. This tube has solid lows with warm bright mids and shimmery highs. When saturated the harmonics are rich and dynamic. The JJ EL84 nails the classic sound of this tube. This tube can replace any EL84 or 6BQ5 tube.
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
Accessory Items:
Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
---|---|---|---|
Apex Matched Pair | T-EL84-JJ-MP | 609722123105 | |
Apex Matched Quad | T-EL84-JJ-MQ | 609722123112 | |
Apex Burned-In Matched Pair | T-EL84-JJ-MPB | 841358108914 | |
Apex Burned-In Matched Quad | T-EL84-JJ-MQB | 841358108921 | |
Single | T-EL84-JJ | 609722123099 | EL84 - 6BQ5 |
Body Height | 71.4 mm | ||
Cathode Current (Ik) | ≤ 65 mA | ||
Filament Current (If) | 0.76 A | ||
Filament Voltage (Uf) | 6.3 V | ||
Gain (μ) | 19 | ||
Grid 1 to filament capacitance (cg1f) | 0.15 pF | ||
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | ||
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | ||
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | ||
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | ||
Grid to Cathode Capacitance (cg/k) | 10 pF | ||
Grid to Plate Capacitance (ca/g) | 0.6 pF | ||
Heater to cathode voltage (Uk/f) | ≤ 100 V | ||
Internal Resistance (Ri) | 40 kΩ | ||
Item Diameter | 22 mm | ||
Item Height | 77.8 mm | ||
Plate Capacitance (ca) | 5.1 pF | ||
Plate Current (Ia) | 48 mA | ||
Plate Dissipation (Wa) | ≤ 12 W | ||
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | ||
Transconductance (S) | 11.3 mA/V |
Packaging Dimensions | Apex Burned-In Matched Pair version | T-EL84-JJ-MPB | 1 in. × 2.1 in. × 3.8 in. |
Apex Burned-In Matched Quad version | T-EL84-JJ-MQB | 2.1 in. × 2.1 in. × 3.8 in. | |
Apex Matched Pair version | T-EL84-JJ-MP | 1 in. × 2.1 in. × 3.8 in. | |
Apex Matched Quad version | T-EL84-JJ-MQ | 2.1 in. × 2.1 in. × 3.8 in. | |
Single version | T-EL84-JJ | 1 in. × 1 in. × 3.6 in. | |
Weight (Packaging) | Apex Burned-In Matched Pair version | T-EL84-JJ-MPB | 0.0794 lbs. |
Apex Burned-In Matched Quad version | T-EL84-JJ-MQB | 0.1588 lbs. | |
Apex Matched Pair version | T-EL84-JJ-MP | 0.0794 lbs. | |
Apex Matched Quad version | T-EL84-JJ-MQ | 0.1588 lbs. | |
Single version | T-EL84-JJ | 0.0397 lbs. |
T-EL84-JJ-MP - Apex Matched Pair version | Body Height | 71.4 mm |
Cathode Current (Ik) | ≤ 65 mA | |
Filament Current (If) | 0.76 A | |
Filament Voltage (Uf) | 6.3 V | |
Gain (μ) | 19 | |
Grid 1 to filament capacitance (cg1f) | 0.15 pF | |
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | |
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | |
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | |
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | |
Grid to Cathode Capacitance (cg/k) | 10 pF | |
Grid to Plate Capacitance (ca/g) | 0.6 pF | |
Heater to cathode voltage (Uk/f) | ≤ 100 V | |
Internal Resistance (Ri) | 40 kΩ | |
Item Diameter | 22 mm | |
Item Height | 77.8 mm | |
Plate Capacitance (ca) | 5.1 pF | |
Plate Current (Ia) | 48 mA | |
Plate Dissipation (Wa) | ≤ 12 W | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 11.3 mA/V | |
T-EL84-JJ-MQ - Apex Matched Quad version | Body Height | 71.4 mm |
Cathode Current (Ik) | ≤ 65 mA | |
Filament Current (If) | 0.76 A | |
Filament Voltage (Uf) | 6.3 V | |
Gain (μ) | 19 | |
Grid 1 to filament capacitance (cg1f) | 0.15 pF | |
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | |
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | |
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | |
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | |
Grid to Cathode Capacitance (cg/k) | 10 pF | |
Grid to Plate Capacitance (ca/g) | 0.6 pF | |
Heater to cathode voltage (Uk/f) | ≤ 100 V | |
Internal Resistance (Ri) | 40 kΩ | |
Item Diameter | 22 mm | |
Item Height | 77.8 mm | |
Plate Capacitance (ca) | 5.1 pF | |
Plate Current (Ia) | 48 mA | |
Plate Dissipation (Wa) | ≤ 12 W | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 11.3 mA/V | |
T-EL84-JJ-MPB - Apex Burned-In Matched Pair version | Body Height | 71.4 mm |
Cathode Current (Ik) | ≤ 65 mA | |
Filament Current (If) | 0.76 A | |
Filament Voltage (Uf) | 6.3 V | |
Gain (μ) | 19 | |
Grid 1 to filament capacitance (cg1f) | 0.15 pF | |
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | |
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | |
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | |
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | |
Grid to Cathode Capacitance (cg/k) | 10 pF | |
Grid to Plate Capacitance (ca/g) | 0.6 pF | |
Heater to cathode voltage (Uk/f) | ≤ 100 V | |
Internal Resistance (Ri) | 40 kΩ | |
Item Diameter | 22 mm | |
Item Height | 77.8 mm | |
Plate Capacitance (ca) | 5.1 pF | |
Plate Current (Ia) | 48 mA | |
Plate Dissipation (Wa) | ≤ 12 W | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 11.3 mA/V | |
T-EL84-JJ-MQB - Apex Burned-In Matched Quad version | Body Height | 71.4 mm |
Cathode Current (Ik) | ≤ 65 mA | |
Filament Current (If) | 0.76 A | |
Filament Voltage (Uf) | 6.3 V | |
Gain (μ) | 19 | |
Grid 1 to filament capacitance (cg1f) | 0.15 pF | |
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | |
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | |
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | |
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | |
Grid to Cathode Capacitance (cg/k) | 10 pF | |
Grid to Plate Capacitance (ca/g) | 0.6 pF | |
Heater to cathode voltage (Uk/f) | ≤ 100 V | |
Internal Resistance (Ri) | 40 kΩ | |
Item Diameter | 22 mm | |
Item Height | 77.8 mm | |
Plate Capacitance (ca) | 5.1 pF | |
Plate Current (Ia) | 48 mA | |
Plate Dissipation (Wa) | ≤ 12 W | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 11.3 mA/V | |
T-EL84-JJ - Single version | Body Height | 71.4 mm |
Cathode Current (Ik) | ≤ 65 mA | |
Filament Current (If) | 0.76 A | |
Filament Voltage (Uf) | 6.3 V | |
Gain (μ) | 19 | |
Grid 1 to filament capacitance (cg1f) | 0.15 pF | |
Grid Circuit Resistance 1 (Rg1), Automatic Bias | 1 MΩ | |
Grid Circuit Resistance 1 (Rg1), Fixed Bias | 0.3 MΩ | |
Grid Voltage 1 (Ug1) | ≥ -100 V, -7.3 V typical | |
Grid Voltage 2 (Ug2) | ≤ 300 V, 250 V typical | |
Grid to Cathode Capacitance (cg/k) | 10 pF | |
Grid to Plate Capacitance (ca/g) | 0.6 pF | |
Heater to cathode voltage (Uk/f) | ≤ 100 V | |
Internal Resistance (Ri) | 40 kΩ | |
Item Diameter | 22 mm | |
Item Height | 77.8 mm | |
Plate Capacitance (ca) | 5.1 pF | |
Plate Current (Ia) | 48 mA | |
Plate Dissipation (Wa) | ≤ 12 W | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 11.3 mA/V |
![]() | All Models |
My Project Lists
Specifications, Files, and Documents
Questions? Contact us at [email protected], or give us a call at 480-820-5411
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
Product Reviews
JJ tubes are the only tubes I use for my Matchless amp, as those are the tubes my Lightning came voiced with from the factory. I’ve used these for 10+ years with no issues! Never had one fail( I don’t play out to be fair ) and I play at least 4-5 hours a week. I have a collection of NOS and other pre-amp ((12AX7) tubes and none sound better than the JJ tubes my amp came with. Cathode biased amps are hard on power tubes, I change those yearly. The pre-amp JJ tubes have never failed and are still going strong!
Good tubes, excellent customer service and quick shipping times. I get all my tubes from Antique Electronic Supply and would definitely recommend them. Best prices I've found on tubes also. It's a no brainer- Antique Electronic Supply!
These JJs work quite well for the Fender Blues Jr series amps which have voltage problems and run too hot.
All around the best tube if you’re looking for clarity, transparency, yet be able to create the grit that tube amp’s are famous for.
The power tubes in my amp started sounding awful, ordered a set of matched JJ’s since they were in stock, three days later they were in my mailbox! Installed them in the amp and was very surprised. They sounded great!
The power tubes in my amp started sounding awful, ordered a set of matched JJ’s since they were in stock, three days later they were in my mailbox! Installed them in the amp and was very surprised. They sounded great!
Good tubes for the price.
Very good sound quality and freq range. Somewhat shorter life and runs hot in our blues Jr and Ampeg Jet amps.
Fast service from this company on hard to find vacuum tubes! Still looking for 12ax7's!
Perfect product! I love that these were Apex matched and that I could find tubes. I popped one and was able to find this pair. I replace both if I drop only one - - keep them matched.
The service was fantastic, shipping was quick and secure. Great place to order tubes or any other guitar needs