L4940D2T12-TR by STMicroelectronics Design and production,in Hong Kong QX Electronics Limited Spot sales,And can pass Hong Kong QX Electronics Limited Purchasing。L4940D2T12-TR Price reference $ 0.715500。L4940D2T12-TR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information L4940D2T12-TR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial