SMAJ15CAT is an SMA TVS (Transient Voltage Suppressor) diode with an AXIAL package, designed and manufactured by Agertech. It is RoHS compliant, meaning it does not contain hazardous materials. The maximum peak pulse power is 1500W and the maximum working voltage is 1500V. It is centre-cathode biased, meaning it has a reverse standoff voltage of 15 Volts. It has a fast response time of under 1 nanosecond and is lead-free for environmental protection. It is suitable for use in a variety of applications, including automotive, industrial, cell phone, networking, etc.