Bench Top Spatial Magnetic Scanning for Circuit Layer Leakage Detection
Bench-top spatial magnetic scanning isolates subsurface circuit leakage paths non-destructively by mapping current-induced magnetic field profiles across PCB layers.
High Density Interconnect Test
Electrical Verification
High density interconnect test defines the suite of protocols used to validate continuity and isolation in complex multilayer circuit boards featuring microvias and blind vias. High density interconnect test confirms that signal paths remain intact across layers and prevents short circuits caused by dielectric breakdown or copper debris during the lamination process. Verification occurs through fixtureless flying probe systems or dedicated bed of nails arrays depending on the production volume and required speed.
Such assessments address the failure modes inherent in laser drilled structures where aspect ratios challenge plating reliability.
Failure Analysis
Probes apply current between net endpoints to detect high resistance joints or open circuits that indicate poor hole wall metallization. Variations in pad size require high precision movement to ensure contact resistance stays within specified limits during measurement. These procedures quantify the electrical health of the substrate by monitoring for leakage currents across fine pitch geometries.
Detecting latent defects remains the primary objective because intermittent connections degrade performance over the operational life of the device.
Performance Compliance
Advanced manufacturing specifications mandate this procedure to ensure board reliability under thermal stress and mechanical vibration. Consistent results provide evidence that the lamination process achieves the necessary registration for stacked or staggered microvia structures. Data captured during this stage directs adjustments in laser parameters or etching cycles to improve yield.
Accurate measurements determine whether a board meets the required signal integrity benchmarks for high frequency applications.