Issue link: https://iconnect007.uberflip.com/i/1545206
82 SMT007 MAGAZINE I JUNE 2026 The Changing Demands of PCB Design Modern PCB designs place far greater demand on the depaneling process than even a decade ago. Today's assemblies often include components placed closer to board edges, thinner PCB materials, complex board layouts, rigid-flex constructions, and higher density layouts. These changes create new challenges during board separation. Mechanical stress that may have once been insignificant can now create cracked solder joints, damaged components, and/or board flex that affects long term reliability. At the same time, manufacturers continue pushing for tighter panel utilization to maximize material effi- ciency. Narrow tabs, tighter spacing between boards, and unconventional board shapes leave less room for traditional depaneling approaches. As a result, depan- eling is no longer the final mechanical step in the process. In many applications, it has become another critical consideration for product quality and reliability. Where Traditional Depaneling Still Works Well Traditional depaneling methods remain highly effective in many manufacturing environments. V-score separation: V-score systems offer a fast and cost-effective solution for straight-edge board designs. For high-volume products with durable board constructions and adequate component clear- ance, these systems remain extremely practical. Routing systems: Routing systems offer greater flexibility for irregular board shapes and remain widely used throughout the industry. Automated routers provide clean edge quality and can handle a broad range of PCB designs with relatively low programming and setup complexity. Punch systems remain valuable in high-volume applications where repeatability and cycle time are priorities. Once tooling is developed, punch systems can provide extremely fast separation speeds. These technologies serve the industry well, so the challenge is not that traditional methods no longer work, it's that PCB designs are increasingly entering areas where mechanical separation introduces new levels of risk. Where the Challenges Begin As components move closer to PCB edges, mechan- ical stress becomes more difficult to manage. Depaneling force that was once absorbed easily by larger, thicker boards now transfers directly into compact assemblies populated with fragile components. Several components can become more susceptible to stress-related damage during separation. Thin materials and flex circuits create addi- tional complications. These assemblies lack the rigidity needed to tolerate traditional mechanical handling, increasing the risk of board flex or defor- mation during depaneling. Board geometry is also changing. Irregular shapes, internal cutouts, and densely nested panel layouts can make mechanical tooling more complicated and less efficient. In many cases, manufacturers are discovering that the depaneling process itself has become a contributor to defects that are difficult to diagnose later in production. Why Laser Depaneling Is Gaining Attention Laser depaneling addresses many of these chal- lenges by removing mechanical stress from the separation process. Instead of physically cutting or breaking the board apart, laser systems utilize focused energy to separate the PCB with minimal force applied to the assembly itself. This makes the technology particularly attractive for: • Thin substrates • Flex and rigid-flex circuits • Densely populated boards • Edge-mounted components • Sensitive ceramic devices • Small form factor products Some advantages include flexibility, as complex board geometries that may require specialized router tooling can often be handled through soft- ware-driven path adjustments; and precision, as laser systems can create extremely narrow cutting paths while maintaining clean edge quality, allowing manufacturers to optimize panel utilization without introducing additional mechanical risk. S M A RT AU TO M AT I O N