Description: Product Details Vacuum Tube, 7581A, Tung-Sol Reissue, Matched Quad, Power, Package of 4.0000T-7581A-TUNG-MQPackage of 4.0000 Rated for more power than the standard 7581 (35W plate dissipation vs 30W plate dissipation). Not what you're looking for? Check out our other products in this category:Vacuum Tubes -> PowerClick here to visit our ebay store's homepage.MeasurementsProduct Measurements:Body Height3.688 in.Capacitance, grid to plate0.6 pFCapacitance, input10 pFCapacitance, output6.5 pFGrid 1 Voltage-14 VGrid Circuit Resistance (Rg), Cathode Bias0.5 MΩGrid Circuit Resistance (Rg), Fixed Bias0.1 MΩHeater Current900 mAHeater to cathode voltage (Uk/f)200 VHeater Voltage6.3 VItem Diameter1.562 in.Item Height4.25 in.Plate Current, pentode (Ia)210 mAPlate Current, triode (Ia)72 mAPlate Dissipation (Wa)30 WPlate Resistance (Ra)22.5 KΩPlate Voltage, pentode (Ua)≤ 500 V, 70 V typicalPlate Voltage, triode (Ua)≤ 450 V, 250 V typicalScreen Current, pentode25 mAScreen Current, triode5 mAScreen Dissipation5 WScreen Voltage, pentode≤ 450 V, 300 V typicalTransconductance (S)6,000 μmhosPackaging Information:Packaging Dimensions4.75 in. x 3.5 in. x 3.5 in.Weight (Packaging)1.1288 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.
Price: 193 USD
Location: Tempe, Arizona
End Time: 2024-11-13T19:53:07.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
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: Tung-Sol
Amplifier Type: Unknown
Item Height: 4.25 in.
Body Height: 3.688 in.
Item Diameter: 1.562 in.
Capacitance, grid to plate: 0.6 pF
Capacitance, input: 10 pF
Capacitance, output: 6.5 pF
Heater Voltage: 6.3 V
Heater Current: 900 mA
Heater to cathode voltage (Uk/f): 200 V
Plate Voltage, pentode (Ua): ≤ 500 V, 70 V typical
Plate Voltage, triode (Ua): ≤ 450 V, 250 V typical
Screen Voltage, pentode: ≤ 450 V, 300 V typical
Plate Dissipation (Wa): 30 W
Screen Dissipation: 5 W
Grid Circuit Resistance (Rg), Fixed Bias: 0.1 MΩ
Grid Circuit Resistance (Rg), Cathode Bias: 0.5 MΩ
Transconductance (S): 6,000 μmhos
Plate Current, pentode (Ia): 210 mA
Plate Current, triode (Ia): 72 mA
Screen Current, pentode: 25 mA
Screen Current, triode: 5 mA
Grid 1 Voltage: -14 V
Plate Resistance (Ra): 22.5 KΩ
Type: Vacuum Tube
MPN: T-7581A-TUNG-MQ
California Prop 65 Warning: This product can expose you to chemicals including nickel (metallic), which is known to the State of California to cause cancer, and cadmium, which is known to the State of California to cause birth defects or other reproductive harm.
Compatible Brand: Any
Compatible Model: Any
