The 1N4749A with Zener Diodes DO-41 RoHS manufactured by Semtech is an axial lead semiconductor silicon diode. The device is a voltage-regulated diode often referred to as a Zener diode as it is able to maintain a relatively constant voltage regardless of the applied current. This voltage regulation is ideal for applications requiring reliable, repeatable levels of voltage in a circuit. The 1N4749A is not designed to be used as a rectifier, but rather for applications such as voltage-stabilization, switching, voltage-limiting or detection. The device is packaged in the standard DO-41 RoHS-compliant form-factor and rated for a breakdown voltage of 7.5V at 5.1W with a temperature coefficient of 0.056V/°C. The 1N4749A has an operating temperature range of -55°C to +175°C. The device is commonly used in automotive, industrial, and consumer electronics applications.