TSOP31438 by Vishay Design and production,in Fidelis Electronics Limited Spot sales,And can pass Fidelis Electronics Limited Purchasing。TSOP31438 Price reference $ 1.230000。TSOP31438 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information TSOP31438 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial