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SMT Solder Paste Printing For FinePitch(FinePitch SMT锡膏印刷)
SMT Solder Paste Printing For Fine-Pitch
Satoru Akita
General Manager
Senju Metal Industry Co., Ltd.
Solder Technical Center
Key Factors that Influence Product Quality
Effective Factors of Fine Pitch Assembly:
Component PCB Placement
Size accuracy Pad design
Mount accuracy
Board accuracy
Mount load
Pad surface
Electrode Warpage condition
surface condition
Fine Pitch
Insufficient print Assembly
volume Preheat temp
Flux heat resistance time control
Stencil accuracy
Atmosphere
Insufficient reflow
Powder size Component tack force Print misalignment temp time
Viscosity
Solder Paste Printing Reflow
In addition to solder paste, it is essential to control
the components, equipment, and process.
2
Considerations for Fine Pitch Assembly
To enable consistent Fine Pitch assembly:
Use paste with good print Use paste with high Use paste with high
release and stability
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