572B Svetlana Triode Transmitting Tube Matched Quad (4) (NOS/NIB)

572B Svetlana Triode Transmitting Tube Matched Quad (4) (NOS/NIB)

The Svetlana 572B is a high-mu power triode intended for use in Class AB, Class B and Class C, RF and audio amplifiers. This new tube features a low-loss white ceramic base and a bonded white ceramic plate cap thermal insulator for high power RF transmitting capability. Temperature-initiated titanium “getter” material is permanently embedded in the surface of the rugged graphite anode for superior gas absorption. This improved “getter” system operates continuously at high temperature, and is over six times more effective than flash getters silvered on tube's glass envelope.

The 572B may be used as a direct drop-in replacement in linear amplifiers using the 811A. Reliability will be enhanced by the upgraded overload capability of this rugged graphite plate tube.

High-quality fabrication and vacuum processing at high temperature enables Svetlana to manufacture the 572B with consistent performance and extended life.

New Old Stock/New In the Box * No longer available for export
MFR: Svetlana, Russia