The BZX84C27 is a SOT-23-3 RoHS (Restriction of Hazardous Substances Directive) compliant, three-pin Zener diode manufactured by Semtech. It has a maximum power dissipation of 500 milliwatts, and a maximum reverse voltage of 27 volts. The device is designed for applications with a regulated voltage source, and is manufactured using an epitaxial planar diode technology featuring low noise and low thermal resistance. The Zener diode offers excellent high-frequency characteristics, high power dissipation, and a low temperature coefficient. The device is suitable for a wide variety of uses, including general purpose clamping, protection, buffering, and voltage regulation.