322SURWA/S530-A3 Shelf life of 12 months BOM PCB PCBA SMT 3D Printing CNC MechatronicPE2205-6 Shelf life of 12 months BOM PCB PCBA SMT 3D Printing CNC MechatronicKTA7427 Shelf life of 12 months BOM PCB PCBA SMT 3D Printing CNC Mechatronicvacuum packed meat shelf lifepaprika shelf life...
Bom List Quotation Connectors Supplier SNAC3W-A021T-0.64 Housing Contacts Crimp SNAC3WA021T0.64 Rectangular Connector Contact $0.0318 - $0.0727 Min. order: 5 pieces Professional Electronic Components Supplier SWPR-001T-P025 Housing Contact SWPR001TP025 Wire AWG 22-26 Wire mm2 0.13-0.33 $0.0158...
我用的是AFS3100，这几天做砷样，载流液5%盐酸，1.2%硼氢化钾.空白200多，一到做标线信号就低得要命，1ppb只有30~40，10ppb的也只有200多，而且线性极其不好.以前正常的时候1ppb有200左右，调高硼氢化钾到2.0%，情况还一样；怀疑灯老化，换灯后，空白有300多，但做标线时信号还是那样低.调低灯高...