STSR30D by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。STSR30D Price reference $ 3.410000。STSR30D - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information STSR30D Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial