Vacuum Tube, 12DW7 / ECC832, JJ Electronics, Dual Triode, Standard Pins, Preamp
Specifications
| Return Shipping Will Be Paid By | Buyer |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 60 Days |
| Refund Will Be Given As | Money Back |
| 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 |
| 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 |
Product Details Vacuum Tube, 12DW7 / ECC832, JJ Electronics, Dual Triode, Standard Pins, PreampT-12DW7-JJSold individually In the 12DW7/ECC832, Section 1 of the tube (pins 6, 7, and 8) is the high gain 12AX7/ECC83 spec (gain factor 100) and Section 2 (pins 1, 2, and 3) is the low gain 12AU7/ECC82 spec (gain factor 17). ECC832 (T-12DW7-JJ-X) Section 1 Section 2 Pins 6, 7, 8 1, 2, 3 Gain Factor of 100 Factor of 17 Spec 12AX7/ECC83 12AU7/ECC82 ECC823 (T-ECC823-JJ) Section 1 Section 2 Pins 6, 7, 8 1, 2, 3 Gain Factor of 17 Factor of 100 Spec 12AU7/ECC82 12AX7/ECC83 Not what you're looking for? Check out our other products in this category:Vacuum Tubes -> PreamplifierVacuum Tubes -> TriodeClick here to visit our ebay store's homepage.MeasurementsProduct Measurements:Body Height49.2 mmCathode Current, system I (Ik)≤ 8 mACathode Current, system II (Ik)≤ 20 mAFilament Current (If)300 / 150 mAFilament Voltage (Uf)6.3 / 12.6 VGain, System I (μ)100Gain, System Ii (μ)17Grid Resistance, system I (Rg)2.2 MΩGrid Resistance, system II (Rg)1 MΩGrid Voltage, system I (Ug)≥ -50 V, -2 V typicalGrid Voltage, system II (Ug)≥ -50 V, -8.5 V typicalHeater to cathode resistance, system I (Rk/f)150 kΩHeater to cathode resistance, system II (Rk/f)150 kΩHeater to cathode voltage, system I (Uk/f)≤ 180 VHeater to cathode voltage, system II (Uk/f)≤ 180 VInternal Resistance, system I (Ri)62.5 kΩInternal Resistance, system II (Ri)7.7 kΩItem Diameter22 mmItem Height56.3 mmPlate Current, system I (Ia)1.2 mAPlate Current, system II (Ia)10.5 mAPlate Dissipation, system I (Wa)≤ 1 WPlate Dissipation, system II (Wa)≤ 2.75 WPlate Voltage (Ua)≤ 300 V, 250 V typicalTransconductance, system I (S)1.6 mA/VTransconductance, system II (S)2.2 mA/VPackaging Information:Packaging Dimensions1 in. x 1 in. x 2.4 in.Weight (Packaging)0.0287 lbs.About UsAbout Amplified Parts:Backed by over 30 years of experience serving the electronic hobbyist market, Amplified Parts® provides the parts you need to modify, repair, or build your own audio and musical instrument equipment, from transistor radios to vacuum tube amplifiers, guitar pedals, and modular synthesizers. Our mission is to provide our customers with high quality products from an inventory of over 12,000 unique items, and to share our expertise via our large library of tech articles and equipment build guides.Whether you are building cutting-edge equipment or restoring classic gear with historical accuracy, Amplified Parts® has what you need.We typically ship the same day if your order is placed before 12:00pm Arizona Time Monday through Friday excluding holidays.All packages are insured and we assume responsibility for the shipment until the carrier shows delivery.Click here to visit our ebay storefront.
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