Toshiba HF Bulb 8T85RB Series

The Toshiba HF Bulb 8T85RB Series is a high-power RF triode tube designed for industrial RF heat equipment and high frequency welding generators. According to the Toshiba technical datasheet, the 8T85RB supports frequencies up to 45 MHz with a plate dissipation of around 10 kW and output power up to approximately 17.5 kW in Class C operation, making it suitable for heavy-duty HF welding and heating applications. These tubes offer robust mechanical construction, forced-air cooling capability, and are widely used as the main oscillation tube in large HF plastic welding machines.