STPS640CB by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。STPS640CB Price reference $ 1.190000。STPS640CB - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information STPS640CB Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial