IC P50L-020P-RR1-DA 型号P50L-020P-RR1-DA 厂商 3M 分类连接器 应用板对板与夹层连接器 ROHS✓ 符合ROHS 产品描述 Board to Board & Mezzanine Connectors 20P LO-PRO PLUG RA THRU-HOLE