The 1N4744A with Zener Diodes DO-41 RoHS manufactured by Semtech is a 3W, glass passivated junction Zener diode intended for applications such as voltage regulating, clipping, clamping, and protection. It is made with silicon semiconductor material and features a marking of “1N4744”. Its features include low leakage current, low reverse current, low noise, fast recovery time, and RoHS compliant. It also supplies a wide operating temperature range of -65°C to +200°C. It has an energy rating of 3.9mW per °C and a reverse Zener voltage of 6.2V.