The 1.5KE15A-E3/54 is a 1500 watt unidirectional transient voltage suppressor diode from the 1.5KE family of products from Vishay, a large global supplier of electronic components. This component is made of an Axial-leaded package, meaning it has two cylindrical leads that come out the end, and is commonly used in circuit protection applications. It can tolerate 15A of surge current at a peak pulse power of 1500 watts, and has a clamping voltage of 54V. It is made up of a silicon construction and has a shift of 5.5V. This component is perfect for a wide variety of industrial, automotive, and consumer devices.