BU-5030-C-12-0 BU-5030-C-24-0 BU-5030-C-36-0 BU-5031-C-24-0 BU-5031-C-36-0 BU505 BU505 其他被动元件 BU505.127 BU-5050-B-12-0 BU-5050-B-24-0