Applied Materials 0020-26374 Copper Clamp Ring, 300mm PVD Chamber

Product Description

The 0020-26374 is a 300mm copper clamp ring manufactured by Applied Materials for Endura PVD magnetron sputtering vacuum process chambers. It is a large annular copper mechanical component with precision mounting holes, engineered for high thermal conductivity and plasma erosion resistance. Installed surrounding the target assembly inside the PVD chamber, it serves as a mechanical clamp and thermal conduction component, using high-purity copper material to handle heat dissipation from plasma radiation while maintaining tight mechanical clamping under repeated thermal cycling. Available market stock includes cleaned used and refurbished rings for semiconductor fab chamber PM and rebuild projects.

Product Functions

• Mechanically fasten and clamp the sputtering target assembly to the chamber magnet assembly, ensuring precise target positioning during magnetron sputtering.
• High thermal conductivity copper body transfers heat from target assembly to cooling channel structure, preventing local overheating and magnet demagnetization.
• Form part of the plasma confinement boundary to stabilize electron distribution and maintain uniform sputtering profile across the target surface.
• Provide electrical grounding path for target assembly to reduce plasma arcing risk during wafer metallization recipes.
• Precision machined mounting holes guarantee repeatable alignment and gap control during target kit replacement.
• Withstand long-term plasma radiation and thermal cycling while retaining mechanical rigidity and thermal transfer performance.
• Modular ring design supports disassembly, wet cleaning and surface refinishing during regular chamber preventive maintenance cycles.

Application Scenarios

• 300mm PVD magnetron sputtering chambers on Applied Materials Endura platforms for copper and barrier metal deposition.
• Spare replacement for deformed, eroded or contaminated 0020-26374 copper clamp rings in production wafer fabrication tools.
• Chamber overhaul, target kit exchange, wet clean and hardware rebuild projects for 12-inch PVD process chambers.
• Process recipe qualification and film uniformity tuning after clamp ring replacement.
• Spare inventory for semiconductor equipment service vendors and wafer manufacturing fabs.
• Chamber repair for systems suffering abnormal target erosion, thermal runaway or frequent plasma arc events.

Common Problems

• Surface erosion: plasma bombardment creates uneven material loss on copper surface, disturbing magnetic field and film uniformity.
• Thermal deformation: repeated thermal cycling causes ring warping, leading to target misalignment and inconsistent target-to-magnet gap.
• Particle contamination: copper oxidation, flaking deposits and surface sputtering residues which introduce particles and reduce wafer yield.
• Mounting hole thread damage: repeated disassembly and torque cycles lead to stripped threads and insufficient clamping force.
• Degraded thermal performance: thick dielectric by-product coating reduces thermal conductivity, raising target operating temperature.
• Intermittent arcing: rough eroded copper surface creates local high field points that trigger plasma arcs during deposition recipes.
• Refurbished unit risk: residual copper erosion and surface roughness; surface inspection, flatness check and particle cleaning required before chamber installation.