6S3P-DR

Russian tube 6S3P-DR is a high-frequency triode with a low level of intra-tube noise, increased reliability and special durability. The 6S3P-DR triode is designed for operation in input stages of HF amplifiers in circuits with a grounded cathode. It is used in circuits of input and broadband amplifiers in general-purpose and special-purpose electronic equipment. Works in any position.
Base 9-pin (B9A).

Closest analogue for a W417A (different pinout) and EC86, PC86.

D – tube with special durability;
R – characterizes the increased reliability of the tube.

• Stamp of technical control department of the manufacturer ” ОТК “

Technical specifications:

• Filament voltage: 6.3 ± 0.6V 
• Filament current: 280 ± 25mA 
• Anode voltage nominal (constant): 150V 
• Anode voltage limit (constant): 160V 
• Anode current: 15 ± 4mA 
• Cathode current limit: 35mA 
• Grid voltage limit (constant): -100V 
• Grid electronic current cutoff voltage: not more than -1.1V 
• Reverse grid current: 0.3uA 
• Power dissipated by the anode, limit: 3W 
• Slope: 19.5 ± 2.5mA/V 
• Gain: 50 ± 15 
• Equivalent tube noise resistance: 170Ohm 
• Cathode resistance for automatic bias: 100Ohm 
• Resistance in the grid circuit limit: 1MOhm

Minimum operating time – 10000 hours.