The SG2P is a cold-cathode, helium-filled tube designed for DC voltage stabilization in electronic circuits.
Common Applications and Equivalents
These tubes are primarily used in vintage radio equipment, guitar amplifiers, and DIY audio projects like the "STA Level" clone to maintain steady voltage levels.
Direct Equivalents: The 0B2 is the most common Western equivalent. Other near-equivalents or related models include the 108C1 and STV108/30.
Identification: Genuine Soviet units often feature an "OTK" stamp and a military rhombus symbol, indicating they met high-reliability military standards.
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