JAN5654W

JAN5654W: High-Reliability Premium Miniature Sharp-Cutoff Pentode Vacuum Tube, belonging to the specialized 7-pin ruggedized electron tube family. It operates with a standard 6.3V heater filament filament line, engineered explicitly with heavily reinforced internal grid bracing structures to completely eliminate mechanical microphonics and prevent electrical parameter drift under severe tactical rocket or aircraft vibration. It acts as an exact military replacement for commercial 6AK5/EF95 glass envelopes inside high-frequency IF/RF amplifier stages and high-fidelity instrumentation pre-amplifier blocks, housed in a standard T-5 1/2 clear glass envelope layout equipped with a 7-pin miniature button base. Manufactured by General Electric / Sylvania. [1, 2]