The AMAOE S938U-012 stencil is a professional middle layer motherboard reballing stencil designed for the Samsung Galaxy S25 Ultra (SM-S938U series). It is used in advanced sandwich motherboard repair, where technicians restore inter-layer connections between stacked PCB boards in flagship devices.
🔧 Main Purpose
- Middle layer (inter-board) reballing
- Solder paste application on fine PCB pads
- Restoration of motherboard communication lines
- Repair of no power / boot loop / signal faults
- Advanced S25 Ultra board reconstruction
⚙️ Features
- 0.12mm ultra-precision stainless steel
- Laser-cut aperture alignment
- High heat resistance for rework stations
- Reusable and durable design
- Stable positioning for micro BGA pads
📱 Compatible Devices
- Samsung Galaxy S25 Ultra
- SM-S938U / S938W / S938D / S938B / S938BE / S938B2 variants
🧠 Supported Board Areas
- Middle frame interconnect pads
- CPU / PMIC communication layers
- RF signal routing connections
- Sandwich motherboard vias & bridges
🧩 Applications
- Samsung flagship motherboard repair
- S25 Ultra dead boot repair
- Network / signal failure repair
- Advanced GSM micro-soldering labs
- Inter-layer PCB restoration
🔥 Summary
The AMAOE S938U-012 stencil is a high-end middle-layer repair tool, not a CPU-only stencil. It is mainly used when repairing stacked motherboard failures in the S25 Ultra.
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