This post explains for the Chip Inductor.
The Part Number is LLM2520.
The function of this semiconductor is Wire Wound Chip Inductor.
Preview images :
The LLM2520 is Wire Wound Chip Inductor. (Previous name FSLM2520)
• Wire-wound miniature chip inductor most suitable for surface mount.
• It is recommended for wide general use for signal conditioning in a variety of electronic equipment.
• Low profile 1.7mm Max height. (1.6mm Typ.)
• Wide inductance range from 0.1 to 220µH.
• Superior solderability and high heat-resistance for reflow soldering.
• Excellent environmental and mechanical stability.
• RoHS compliant.