2N3585

High-voltage NPN silicon power switching and amplification transistor housed in a rugged metal TO-66 diamond-style package, engineered to handle intense peak pulse voltages safely in deflection circuits and power regulators. Equivalents: 2N3584, MJE13003, NTE291. Real-Life Examples: Early military-grade switching power supplies, television horizontal output networks, aerospace telemetry modules, and high-frequency inverter frames.