TL431ILPR by TI Design and production,in HongKong RichShine Technology Co., Limited Spot sales,And can pass HongKong RichShine Technology Co., Limited Purchasing。TL431ILPR Price reference $ 0.115500。TL431ILPR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TL431ILPR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial