The 1N5223B with Zener Diodes DO-35 RoHS is a device produced by Semtech. It is a 350V, 5.1V, 2W, Zener diode, with a reverse voltage of 5.6 V reverse breakdown voltage and a 5.1 V nominal zener voltage. It is manufactured with an extruded aluminum case, the hermetically sealed metal DO-35 or) package, with a RoHS compliant version available. The device has a low temperature coefficient of voltage, high breakdown voltage, high stability and low leakage current, making it suitable for use in high voltage applications and for protection of circuits against overvoltage. It also features enhanced capacitance at high frequencies, making it suitable for high frequency applications.