The ESD5311X-2/TR is an 18V, 7.5V, and 5V TVS Diode manufactured by Will Semiconductor. It is designed for bidirectional transient voltage protection in consumer, industrial, telecom, and automotive applications. The maximum withstand voltage is rated at 18V, 7.5V, and 5V for each direction. The package type is WBFBP-02C-C, and the product is RoHS compliant.