This is a Walsin 1206X106K100, a 10uF 10V surface mount multilayer ceramic capacitor (MLCC). It has a 1206 case size, making it a 0.12 inch (3.2mm) square device. It is RoHS compliant and compliant to other standards such as UL, CQC, and VDE. It is a durable, highly reliable chip capacitor designed to withstand harsh environmental conditions. It is suitable for surface mounting applications and can be used in many circuits, including decoupling, energy storage, and filtering.