SPX3940M3-L-2.5 SPX3940M3-L-2.5/TR SPX3940M3-L-2-5 SPX3940M3-L-2-5/TR SPX3940M3-L-2-5/TR 电源IC SPX3940M3-L-3.3 SPX3940M3-L-3.3/TR SPX3940M3-L-3.3/TR TEL:88834448 SPX3940M3-L-3-3 SPX3940M3-L-3-3/MTR