BFU550XAR by NXP Semiconductors Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。BFU550XAR Price reference $ 0.155000。BFU550XAR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information BFU550XAR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial