TDA2005R by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。TDA2005R Price reference $ 2.840000。TDA2005R - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TDA2005R Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial