5678WB Philips ECG JAN NOS
The 5687 is miniature, medium-mu twin triode for use in general-purpose amplifier appication. The tube is characterized by high perveance and high emission capabilities. Expert for common heater connection, each section is electrically independent. Printing may be different due to availability of stock.
It replaces the 6201, E81CC and ECC801. upgrades ECC81 and 12AT7.
Manufactuer: Philips USA as JAN 12AT7WC (6201)
