Vacuum Tube - 12DW7, Electro-Harmonix

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Vacuum Tube - 12DW7, Electro-Harmonix

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Electro-Harmonix 12DW7 dual triode preamp tube. Made in Russia.

12DW7 combines one triode of 12AX7 and one triode of 12AU7 in a dual triode package. System 1 (pins 6, 7, 8) is the high-mu 12AX7 triode and system 2 (pins 1, 2, 3) is the medium-mu 12AU7 triode.

Item ID:
Product Measurements
Body Height1.9375 in.
Capacitance, grid to plate1.7 pF
Capacitance, input1.8 pF
Capacitance, output2.0 pF
Cathode Current (Ik)22 mA
Grid Circuit Resistance (Rg), Fixed Bias0.25 MΩ
Grid Circuit Resistance (Rg), Self Bias1 MΩ
Grid Voltage (Ug)-55 V
Heater Current300 mA / 150 mA
Heater Voltage6.3 V / 12.6 V
Heater to cathode voltage (Uk/f)200 V
Item Diameter0.875 in.
Item Height2.1875 in.
Plate Dissipation (Wa)1.2 W
Plate Voltage (Ua)330 V
Packaging Information
Packaging Dimensions2.75 in. × 1 in. × 1 in.
Weight (Packaging)0.038 lbs.

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PDF: Specification Sheet Specification Sheet252.12 KB

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