3A adjustable regulator in a steel TO-3 can
The LM350K STEEL is a positive adjustable voltage regulator delivering up to 3A output current in the classic TO-204AA (TO-3) steel package. Output voltage is set with two external resistors from a 1.25V reference up to 33V, with a 35V maximum input.
PSRR is specified at 86dB to 65dB at 120Hz, which means the regulator attenuates 120Hz full-wave rectifier ripple by a factor of roughly 20,000 at the low end. For a 1Vpp ripple on the input, less than 50µVpp appears at the output at 120Hz. This matters when powering analog front-ends, reference circuits, or audio stages where line-frequency hum couples into the signal path. Built-in over-current, over-temperature, and short-circuit protection let the regulator survive output shorts indefinitely without external foldback circuitry. The thermal shutdown threshold is set above the 125°C operating maximum, so the die temperature governs the safe operating area in a high-dissipation layout.