Length Matching Rules for DDR Routing: Groups and Tolerance A parallel memory bus depends on several signals arriving together. The controller launches data, a strobe edge tells the device when to sample, and the margin between them is the window in which the whole bus works or fails. Trace length…

PCB Accelerated Life Test Model: Estimating the Years 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 accelerated life test model gives you a practical advantage…

PCB HALT Test Planning: Finding the Weak Point 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 HALT test planning from the perspective of a PCBA factory floor,…

PCB Burn in Board Design: Running the Boards Hot 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 burn in board design from the perspective of a PCBA…

PCB Functional Test Sequence Design: Ordering the Tests Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains…

PCB in Circuit Test Fixture Wiring: Wiring the Fixture Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article…

PCB Test Point Placement Rules: Where to Put the Probe 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 test point placement rules from the perspective of a…

PCB Flying Probe vs Bed of Nails: Choosing the Fixture 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 flying probe vs bed of nails from the perspective…

PCB Design for Test Access: Reaching Every Net 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 design for test access from the perspective of a PCBA factory…

PCB Prototype Build Checklist: Before the First Panel Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains…