The SMDJ17A is a bi-directional, unidirectional, and bidirectional Transient Voltage Suppressor (TVS) diode from Yageo. This diode is RoHS compliant and comes with the DO-214AB small surface mount package. The SMDJ17A is suitable for transient overvoltage protection for data and signal lines in a variety of applications such as telecommunications, consumer electronics, automotive power drives, and on-board computers. It has a breakdown voltage of 17V, an unidirectional peak pulse power of 350W, and a bidirectional clamping voltage of 36.5V. It is typically used to protect sensitive electronics from over voltages, ESD strikes, and RF pulses.