Selecting Laminate Materials for High Density Interconnect Stackups
HDI laminate selection balances resin z-CTE expansion, low-Dk glass weave style, and HVLP copper roughness against sequential lamination panel yields.
Heterogeneous Substrate Core Lamination Dynamics and Resin Gradient Phase Extraction
Heterogeneous core lamination requires synchronized thermal ramps to align flow windows and prevent resin phase extraction along substrate interfaces.
Modeling Thermomechanical Fatigue Rates in Sub-0.15mm Laser Drilled Target Pad Interfaces
Sub-0.15mm microvia target pad interface fatigue scales nonlinearly with z-axis CTE mismatch and target pad offset, demanding thick base copper and equiaxed plating.
Cross Hatched Ground Plane Geometry Optimization for High Frequency Signal Integrity
Cross-hatched ground plane geometry requires balancing mesh pitch, line width, and trace bias angle to prevent impedance elevation and slow-wave phase delay.
Correlating High Temperature Thermal Stress Coupon Failures with Inner Layer Interconnect Degradation Rates
Correlating micro-ohmic resistance drift in thermal stress coupons with microsection defect rates isolates latent inner layer post separation before assembly.