SPX3819M5-L/MTR SPX3819M5-L/TR SPX3819M5-L/TR TEL:88834448 SPX3819M5-L/TR 电源IC SPX3819M5-L-1.2 SPX3819M5-L-1.2/TR SPX3819M5-L-1.2/TR TEL:88834448 SPX3819M5-L-1.2/TR全系列 SPX3819M5-L-1.5 SPX3819M5-L-1.5/TR