可调电源模块压板降压¥17.30去看看童季泥商贸发布了LM2596S DC-DC直流可调降压电源模块稳压板3A 1224转1253.3V1316CD1253.3GIGH¥1.40去看看元器件之家发布了CD1316L/GIGH-3 CD1316AS/IVP-2 CD1316AL/RIV-2 CD1253.3UH3.6A