6SU7GTY
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High-reliability, ultra-low-leakage octal 8-pin high-mu twin triode featuring matching, hand-selected sections engineered for precision industrial instrumentation and critical balanced DC amplifier circuits. Equivalents: 6SU7, 6SU7GT, 5691. Real-Life Examples: US military test benches, laboratory-grade vintage oscilloscopes, early analog computing instrumentation modules.
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