SRK2001 by STMicroelectronics Design and production,in TanJiayuan Electronics Spot sales,And can pass TanJiayuan Electronics Purchasing。SRK2001 Price reference ¥ 9.343726。SRK2001 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information SRK2001 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial