Assembly DFM Review Agenda A manufacturability review is the last cheap opportunity to change a design. After the layout is released, a change costs a revision, a new stencil, a new program and possibly a scrapped panel; before release, it costs a conversation. The difference between a review that finds…

Component Bake Schedules and Floor Life A component that has absorbed moisture and is heated quickly can crack internally, and the crack is invisible from outside. The bake is the operation that removes the moisture before the heat arrives, and its schedule is set by the package rather than by…

PCB Oven Zone Improvement: Getting Better Each Lot Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB oven zone improvement gives you a practical advantage when…

PCB Oven Zone Selection: Choosing What Fits Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB oven zone selection from the perspective of a PCBA factory floor, covering…

Moisture Sensitivity Level and Floor Life Control A plastic package absorbs moisture from the air. When it is heated to reflow temperature the moisture turns to steam, and the pressure can crack the package from the inside, delaminate the die attach or lift the wire bonds. The damage is called…

Paste Kneading and Print Stability Over a Shift Solder paste is a suspension, and a suspension separates. Kneading is the operation that restores the mixed state before printing, and the stability of the print over a shift depends on it being done consistently rather than quickly. What Happens Without Kneading…

PCB Oven Zone Problems: When It Goes Wrong Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB oven zone problems gives you a practical advantage when…

PCB Conveyor Review: A Second Look Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB conveyor review gives you a practical advantage when you choose a…

PCB Oven Zone Checklist: What to Check Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB oven zone checklist gives you a practical advantage when you…

Visual Criteria for Solder Joint Acceptance A visual acceptance criterion is a sentence and a photograph, and the two have to agree. Where they do not, the criterion is interpreted differently by different inspectors, and the difference shows up as an inconsistent yield rather than as a defect. What the…