Singulation with Precision: Our STHL Depanelization and Lead Forming Capabilities

Understanding Depanelization Methods
Different board designs require different separation methods. V-score routing uses a rotating blade to cut along scored lines—ideal for simple rectangular boards with V-grooves. Tab routing uses a milling bit to cut through tabs connecting boards—suitable for complex outlines or boards without V-scores. Punch and die uses matched tooling to punch individual boards from the panel—best for very high volumes of identical boards. Laser depanelization uses a focused beam for clean, stress-free cuts—preferred for delicate boards or components sensitive to mechanical shock.

Method Selection Criteria
We help clients select the optimal method based on board thickness (thin boards are more fragile), component placement (components near edges may be impacted), board material (some materials cut cleaner than others), production volume (different methods favor different volumes), and stress sensitivity (ceramic capacitors are particularly vulnerable to flexing). Our engineering team evaluates each product and recommends the approach that minimizes risk while maximizing quality.

Depanelization-Induced Stress Management
All depanelization methods introduce some mechanical stress. Our processes are designed to minimize this. For V-score and tab routing, we optimize cutting speeds and feed rates to reduce vibration. For punch and die, we use sharp, well-maintained tooling and proper support backing. We also implement stress-relief techniques such as supporting board edges during cutting and avoiding cutting near sensitive components. For boards with ceramic capacitors near depanelization edges, we may recommend design changes to relocate those components or change separation methods.

Lead Forming for Through-Hole Components
Beyond board separation, we offer lead forming services for through-hole components. Many components arrive with straight leads that must be shaped before insertion. Our lead forming capabilities include cutting leads to specified lengths, bending leads to specified angles and offsets, and forming complex shapes for unique mounting requirements. We use precision tooling to ensure consistent dimensions and avoid damage to component bodies or lead plating.

Forming Quality Verification
Every formed component is verified against specifications. Our technicians use go/no-go gauges to check critical dimensions, visual inspection under magnification to examine lead condition, and component-specific test fixtures where required. Reject rates are tracked to identify any tooling wear or incoming material issues requiring correction.

Depanelization and lead forming may seem like simple mechanical operations, but improper execution can destroy an otherwise perfect assembly. Our precision equipment and experienced operators ensure that singulation and forming never become sources of defects.

From panel to product, every step matters. Contact us to discuss how our depanelization and lead forming expertise can protect your assembled boards during final processing.