3SK74 by RENESAS/NEC Design and production,in Shenzhen Xinghua Ping Technology Co., Ltd. Spot sales,And can pass Shenzhen Xinghua Ping Technology Co., Ltd. Purchasing。3SK74 Price reference $ 0。3SK74 - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information 3SK74 Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial