EL519 PDF datasheet can download.
This product has High Performance Beam Power Tetrode functions.
This is one of the semiconductor types. This part name is EL519.
Manufacturers of the product is ETC.
Image and pinout :
Some of the text files within the PDF file
Svetlana EL509 / EL519 / 6KG6 High Performance Beam Power Tetrode The Svetlana EL509 is a beam power tetrode intended for use in class A, AB or B audio amplifiers and for class B or C RF amplification. Close manufacturing specification tolerances and improved high voltage processing provides improved reliability and superior performance. The Svetlana EL509 features: Increased peak cathode emission from new cathode materials; Stable operation from extended processing and aging; Gold-plated grid; Precise grid/screen alignment; Extraheavy glass envelope for ruggedness; Improved vacuum processing; Comprehensive testing before and after aging. The Svetlana EL509 is manufactured in Russia at the Svetlana factory and is designed to be a direct replacement for any 6KG6 or EL509. The strict manufacturing and quality controls at the Svetlana plant assure functionality and long life. Electrical Heater Voltage(AC,DC) Current Transconductance(nominal) Plate resistance(nominal) Interelectrode capac [ … ]
Please refer to the file for details.