The JJ Electronic 12BH7-A is a faithful reproduction of the original tube. Its rugged construction offers high reliability. The JJ 12BH7-A can be used as a replacement for any 12BH7 tube.
| Body Height | 51.2 mm | |
| Cathode Current (Ik) | ≤ 20 mA | |
| Filament Current (If) | 600 / 300 mA | |
| Filament Voltage (Uf) | 6.3 / 12.6 V | |
| Gain (μ) | 16.5 | |
| Grid Circuit Resistance (Rg), Automatic Bias | 1 MΩ | |
| Grid Circuit Resistance (Rg), Fixed Bias | 0.25 MΩ | |
| Grid Voltage (Ug) | ≥ -50 V, -10.5 V typical | |
| Heater to Cathode Voltage (Uk/f) | 100 V - 200 V | |
| Internal Resistance (Ri) | 5.3 kΩ | |
| Item Diameter | 22 mm | |
| Item Height | 57.6 mm | |
| Plate Current (Ia) | 11.5 mA | |
| Plate Dissipation (Wa) | ≤ 3.5 W | |
| Plate Voltage (Ua) | ≤ 300 V, 250 V typical | |
| Transconductance (S) | 3.1 mA/V |
