TL431CDR by TI Design and production,in SEHOT CO., LIMITED Spot sales,And can pass SEHOT CO., LIMITED Purchasing。TL431CDR Price reference $ 0.132518。TL431CDR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TL431CDR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial