TL431ILPR by Texas Instruments(TI) Design and production,in Shenzhen Yirenxin Technology Co., Ltd. Spot sales,And can pass Shenzhen Yirenxin Technology Co., Ltd. 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