The Murata Electronics North America electronic component (product) with part number 020021-LQM21NNR27K10D is a multilayer inductor with a current rating of 250mA and an inductance of 270nH. It has a height of 0.041" (1.05mm) and a mounting type of SMD (SMT). The tolerance is ±10% and the core material is ferrite. The Q @ Freq is 20 @ 25MHz, and the frequency - self resonant is 200MHz. The frequency - test is 25MHz. This product is categorized as an inductor, coil, choke. The DC resistance (DCR) is 420 mOhm Max and the temperature range - operating is -40°C to 85°C. The case / package is 0805 (2012 Metric).