12DW7 / ECC832, JJ Electronics, Dual Triode Vacuum Tube, Standard Pins, Preamp

US $20.59
Condition:
New
More than 10 available40 sold
Breathe easy. Returns accepted.
People want this. 13 people are watching this.
Shipping:
US $7.30 USPS Ground Advantage®.
Located in: Tempe, Arizona, United States
Delivery:
Estimated between Thu, Jul 24 and Mon, Jul 28 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Payments:
       Diners Club
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eBay item number:126614794349
Last updated on Jul 13, 2025 20:01:18 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Brand
JJ Electronics
MPN
T-12DW7-JJ
Compatible Brand
Any
Compatible Model
Any
Features
None
Amplifier Type
Unknown
Item Diameter
22 mm
Item Height
56.3 mm
Body Height
49.2 mm
Filament Voltage (U<sub>f</sub>)
6.3 / 12.6 V
Filament Current (I<sub>f</sub>)
300 / 150 mA
Plate Voltage (U<sub>a</sub>)
≤ 300 V, 250 V typical
Plate Current, system I (I<sub>a</sub>)
1.2 mA
Plate Current, system II (I<sub>a</sub>)
10.5 mA
Grid Voltage, system I (U<sub>g</sub>)
≥ -50 V, -2 V typical
Grid Voltage, system II (U<sub>g</sub>)
≥ -50 V, -8.5 V typical
Transconductance, system I (S)
1.6 mA/V
Transconductance, system II (S)
2.2 mA/V
Gain, System I (μ)
100
Gain, System Ii (μ)
17
Internal Resistance, system I (R<sub>i</sub>)
62.5 kΩ
Internal Resistance, system II (R<sub>i</sub>)
7.7 kΩ
Plate Dissipation, system II (W<sub>a</sub>)
≤ 2.75 W
Cathode Current, system II (I<sub>k</sub>)
≤ 20 mA
Heater to cathode voltage, system II (U<sub>k/f</sub>)
≤ 180 V
Heater to cathode resistance, system II (R<sub>k/f</sub>)
150 kΩ
Grid Resistance, system II (R<sub>g</sub>)
1 MΩ
Plate Dissipation, system I (W<sub>a</sub>)
≤ 1 W
Cathode Current, system I (I<sub>k</sub>)
≤ 8 mA
Heater to cathode voltage, system I (U<sub>k/f</sub>)
≤ 180 V
Heater to cathode resistance, system I (R<sub>k/f</sub>)
150 kΩ
Grid Resistance, system I (R<sub>g</sub>)
2.2 MΩ
Type
Vacuum Tube
UPC
609722123501
Category

Item description from the seller

About this seller

Amplified Parts

99.6% positive feedback190K items sold

Joined Mar 2010
Usually responds within 24 hours
Welcome toAmplified Parts!Whether you are a seasoned musician or a novice, our goal is to help you find the products you need to customize your musical sound and your equipment. Amplified Parts is the ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.8
Shipping speed
5.0
Communication
5.0

Seller feedback (59,562)

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    • r***s (525)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Excellent seller and tube
    • e***d (304)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Works great thanks
    • o***w (2839)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Nice tubes, fast delivery.
    See all feedback