SPX3819M5-L-1-8/MTR SPX3819M5-L-1-8/T SPX3819M5-L-1-8/TR SPX3819M5-L-1-8/TR IC SPX3819M5-L-1-8TR SPX3819M5-L-2.5 SPX3819M5-L-2.5/TR SPX3819M5-L-2.5/TR全系列 SPX3819M5-L-2.7/TR SPX3819M5-L-2.8