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Pictured: Gold
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Vacuum Tube - 12AU7 / ECC82, JJ Electronics
The JJ Electronic 12AU7 / ECC82 is a medium gain dual triode built with the quality and reliability that we’ve come to expect from a JJ tube. This 12AU7 offers smooth tones and clear definition which is why it’s no surprise that this tube is often found in hifi equipment as well as guitar amplifiers.
RoHS Compliant
Accessory Items:
| Pin Type | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Gold | T-12AU7-GOLD-JJ | 609722123488 | ECC82 / 12AU7 - GOLD |
| Regular | T-12AU7-JJ | 844632022074 | ECC82 - 12AU7 |
| Body Height | 49.2 mm | |
| Cathode Current (Ik) | ≤ 20 mA | |
| Filament Current (If) | 300 / 150 mA | |
| Filament Voltage (Uf) | 6.3 / 12.6 V | |
| Gain (μ) | 17 | |
| Grid Voltage (Ug) | ≥ -50 V, -8.5 V typical | |
| Heater to cathode resistance (Rk/f) | 150 kΩ | |
| Heater to cathode voltage (Uk/f) | ≤ 180 V | |
| Internal Resistance (Ri) | 7.7 kΩ | |
| Item Diameter | 22.2 mm | |
| Item Height | 56.3 mm | |
| Plate Current (Ia) | 10.5 mA | |
| Plate Dissipation (Wa) | ≤ 2.75 W | |
| Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
| Transconductance (S) | 2.2 mA/V |
| Packaging Dimensions | 1 in. × 1 in. × 2.5 in. | ||
| Weight (Packaging) | Gold version | T-12AU7-GOLD-JJ | 0.03 lbs. |
| Regular version | T-12AU7-JJ | 0.029 lbs. |
| T-12AU7-JJ - Regular version | Body Height | 49.2 mm |
| Cathode Current (Ik) | ≤ 20 mA | |
| Filament Current (If) | 300 / 150 mA | |
| Filament Voltage (Uf) | 6.3 / 12.6 V | |
| Gain (μ) | 17 | |
| Grid Voltage (Ug) | ≥ -50 V, -8.5 V typical | |
| Heater to cathode resistance (Rk/f) | 150 kΩ | |
| Heater to cathode voltage (Uk/f) | ≤ 180 V | |
| Internal Resistance (Ri) | 7.7 kΩ | |
| Item Diameter | 22.2 mm | |
| Item Height | 56.3 mm | |
| Plate Current (Ia) | 10.5 mA | |
| Plate Dissipation (Wa) | ≤ 2.75 W | |
| Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
| Transconductance (S) | 2.2 mA/V | |
| T-12AU7-GOLD-JJ - Gold version | Body Height | 49.2 mm |
| Cathode Current (Ik) | ≤ 20 mA | |
| Filament Current (If) | 300 / 150 mA | |
| Filament Voltage (Uf) | 6.3 / 12.6 V | |
| Gain (μ) | 17 | |
| Grid Voltage (Ug) | ≥ -50 V, -8.5 V typical | |
| Heater to cathode resistance (Rk/f) | 150 kΩ | |
| Heater to cathode voltage (Uk/f) | ≤ 180 V | |
| Internal Resistance (Ri) | 7.7 kΩ | |
| Item Diameter | 22.2 mm | |
| Item Height | 56.3 mm | |
| Plate Current (Ia) | 10.5 mA | |
| Plate Dissipation (Wa) | ≤ 2.75 W | |
| Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
| Transconductance (S) | 2.2 mA/V |
 Specification Sheet | All Models |
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Specifications, Files, and Documents
Questions and Answers
Click each question to see its answers.
1 answers
Can you use these anywhere you can use a 12AX7? What is the difference between 12AX7a and 12AX7b?
Asked by Anonymous on August 18th, 2016.
Yes, a 12AX7 and a 12AU7 are interchangeable. In fact, all of the following tubes work where a 12AX7 would go: 5751, 12AT7, 12AY7 and 12AU7. The 12AX7 will have the most gain and the 12AU7 will have least amount gain.
1 answers
Do you have a matched pair?
Asked by Anonymous on November 18th, 2016.
Hi, we do not match preamp tubes at this time.
1 answers
What is the highest quality 12AU7 or ECC82 you have in stock please?
Asked by Anonymous on April 5th, 2017.
It is hard for us to say what is the highest quality 12AU7 as tone is subjective. The JJ is the most popular 12AU7 we carry.
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