BAT41 by STMicroelectronics Design and production,in TanJiayuan Electronics Spot sales,And can pass TanJiayuan Electronics Purchasing。BAT41 Price reference ¥ 1.551942。BAT41 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information BAT41 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial