Vacuum Tube - 81, Rectifier, ST Glass
New-Old-Stock (NOS) tube.
The 81 is a half-wave high-vacuum rectifier which may be used with either choke or condenser input to the filter.
| No measurements are currently available for this product. Please contact us if you have any questions. |
| Packaging Dimensions | 3 in. × 3 in. × 7 in. | |
| Weight (Packaging) | 0.176 lbs. |
 NOS Tube Specification Sheet | All Models |
Product Reviews