2STN1550 by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。2STN1550 Price reference $ 0.174930。2STN1550 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information 2STN1550 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial