Vacuum Tube - 12BH7, Electro-Harmonix
Superior medium-mu twin triode driver tube for hifi use. 3.5 watts dissipation per plate. New design of excellent quality
Accessory Items:
Pin Type | Our Part Number | UPC/EAN |
---|---|---|
Regular | T-12BH7-EH | 609722129770 |
Gold | T-12BH7-GOLD-EH | 841358101816 |
Amplification Factor | 16.5 | ||
Body Height | 2.374 in. | ||
Capacitance, Plate to Plate | 0.8 pF | ||
Capacitance, grid to plate | 2.6 pF | ||
Capacitance, input | 3.2 pF | ||
Capacitance, output | 0.5 pF | ||
Cathode Current (Ik) | 20 mA | ||
Grid Circuit Resistance (Rg), Cathode Bias | 1.0 MΩ | ||
Grid Circuit Resistance (Rg), Fixed Bias | 0.25 MΩ | ||
Grid Voltage (Ug) | -10.5 V | ||
Heater Cathode Voltage, Negative | 200 V | ||
Heater Cathode Voltage, Positive | 100 V | ||
Heater Current | 300 / 600 mA | ||
Heater Voltage | 6.3 / 12.6 V | ||
Heater Warmup Time | 11 s | ||
Item Diameter | 0.875 in. | ||
Item Height | 2.625 in. | ||
Plate Current (Ia) | 11.5 mA | ||
Plate Dissipation (Wa) | 3.5 W | ||
Plate Resistance (Ra) | 5.3 kΩ | ||
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | ||
Transconductance (S) | 3,100 μmhos |
Packaging Dimensions | Gold version | T-12BH7-GOLD-EH | 3.38 in. × 1 in. × 1 in. |
Regular version | T-12BH7-EH | 1 in. × 1 in. × 3.5 in. | |
Weight (Packaging) | Gold version | T-12BH7-GOLD-EH | 0.0441 lbs. |
Regular version | T-12BH7-EH | 0.0463 lbs. |
T-12BH7-GOLD-EH - Gold version | Amplification Factor | 16.5 |
Body Height | 2.374 in. | |
Capacitance, Plate to Plate | 0.8 pF | |
Capacitance, grid to plate | 2.6 pF | |
Capacitance, input | 3.2 pF | |
Capacitance, output | 0.5 pF | |
Cathode Current (Ik) | 20 mA | |
Grid Circuit Resistance (Rg), Cathode Bias | 1.0 MΩ | |
Grid Circuit Resistance (Rg), Fixed Bias | 0.25 MΩ | |
Grid Voltage (Ug) | -10.5 V | |
Heater Cathode Voltage, Negative | 200 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 300 / 600 mA | |
Heater Voltage | 6.3 / 12.6 V | |
Heater Warmup Time | 11 s | |
Item Diameter | 0.875 in. | |
Item Height | 2.625 in. | |
Plate Current (Ia) | 11.5 mA | |
Plate Dissipation (Wa) | 3.5 W | |
Plate Resistance (Ra) | 5.3 kΩ | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 3,100 μmhos | |
T-12BH7-EH - Regular version | Amplification Factor | 16.5 |
Body Height | 2.374 in. | |
Capacitance, Plate to Plate | 0.8 pF | |
Capacitance, grid to plate | 2.6 pF | |
Capacitance, input | 3.2 pF | |
Capacitance, output | 0.5 pF | |
Cathode Current (Ik) | 20 mA | |
Grid Circuit Resistance (Rg), Cathode Bias | 1.0 MΩ | |
Grid Circuit Resistance (Rg), Fixed Bias | 0.25 MΩ | |
Grid Voltage (Ug) | -10.5 V | |
Heater Cathode Voltage, Negative | 200 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 300 / 600 mA | |
Heater Voltage | 6.3 / 12.6 V | |
Heater Warmup Time | 11 s | |
Item Diameter | 0.875 in. | |
Item Height | 2.625 in. | |
Plate Current (Ia) | 11.5 mA | |
Plate Dissipation (Wa) | 3.5 W | |
Plate Resistance (Ra) | 5.3 kΩ | |
Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
Transconductance (S) | 3,100 μmhos |
Specification Sheet for Regular | T-12BH7-EH |
My Project Lists
Specifications, Files, and Documents
Questions? Contact us at [email protected], or give us a call at 480-296-0890
Product Reviews
Purchased to replace blown out tubes in my blackstar ht-5. Major improvement over the stock tubes, i will definitely purchase again.
I replaced an EH 12AU7 with the EH 12BH7 and it yielded a discernible improvement to the sound of my preamp.