2N681JAN

High-reliability, Joint Army-Navy (JAN) military-certified silicon controlled rectifier (SCR) thyratron-alternative housed in a heavy-duty metal stud-mount TO-48 package, engineered for phase control and high-current AC/DC power switching. Equivalents: JAN 2N681, NTE5520, MCR64-2. Real-Life Examples: Military-grade radar power frames, naval shipboard power supplies, and heavy-duty tactical industrial automated welding systems.