Enabling High-Aspect-Ratio TGV Structures One of the most significant challenges in TGV processing is achieving complete wetting of deep, narrow via structures prior to metallization. ClassOne’s vacuum pre-wet (VPW) chamber is specifically designed to improve solution penetration into high-aspect-ratio features by removing trapped air and promoting complete feature wetting before plating. For many emerging TGV architectures, VPW is a critical enabling process that helps support: - Improved via wetting - Reduced void formation - More uniform metallization - Higher process yields When combined with CopperMax™ electroplating, VPW helps create a robust foundation for advanced TGV process development.
