Deposition Test Pattern: QFP Pad (fine pitch)
Stencil Thickness :
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130 microns
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Stencil Material :
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Stainless Steel
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Printer :
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DEK ELAi
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Printing Speed :
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60 mm/s
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Stencil Separation Speed :
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0.3 mm/s
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Stencil Separation Speed :
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40N
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Atmosphere :
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25℃, 50%HR
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Demonstrations of stencil aperture clogging

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PN436 No obvious clogging between QFP lead frame after 20 prints.
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After 20 prints, the surface of QFP lead frame is observed to be uneven, causing noticeable clogging.
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Printing-ability Analysis QFN (pitch 0.4mm)
Excellent Deposition
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Poor Deposition
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PN436
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Conversational
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Good Soldering Performance for 0201 Chip
Consistent Soldering Performance After 12 HRs Printing
Still perfect soldering performance
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Solder powder Oxidation
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PN436
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Conversational
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In the process of SMT printing, the stencil needs cleaning every 4 or 5 prints. With usage of PN436 lead free solder paste, the cleaning frequency is substantially lowered, saving lots of time and costs of stencil cleaning, which in turn helps improve productivity.
PN436 lead free solder paste carries out perfect printing performance with excellent deposition, stable viscosity after continuous printing for 8 hours and full and complete printing shape without clogging.