VN7140ASTR by STMicroelectronics Design and production,in Seccoeko Technology Co., Ltd. Spot sales,And can pass Seccoeko Technology Co., Ltd. Purchasing。VN7140ASTR Price reference $ 0.872480。VN7140ASTR - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information VN7140ASTR Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial