The 1N4728A with Zener Diodes DO-41 RoHS is a diode manufactured by Semtech Inc. The diode has a maximum voltage rating of 5.1V, and is available in a variety of package sizes ranging from DO-41, SOD-123 and SOD-323. Its forward voltage drop is 0.55V at 250mA, and its reverse leakage current is max. 2.0 µA at 5V. The diode comes with an integrated Zener element, allowing it to work as a regulator. The diode has RoHS compliance, and is ideal for a variety of applications such as low-power voltage regulation, signal sensing and clipping, or as a protection device for light emitting diodes.