S2-LPQTR by STMicroelectronics Design and production,in Xiongsheng Micro Technology (Hong Kong) Co., Ltd. Spot sales,And can pass Xiongsheng Micro Technology (Hong Kong) Co., Ltd. Purchasing。S2-LPQTR Price reference $ 1.989680。S2-LPQTR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information S2-LPQTR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial