The document discusses a proprietary COBRA process that is applied to stainless steel SMT stencils to enhance their aspect ratio properties and withstand standard SMT printing processes. The COBRA process focuses on improving the mechanical seal and paste release of stencils, allowing for stable printing results even with miniaturized components. Test results showed the COBRA stencils maintained process capability through over 200,000 print strokes.

1. Datasheet
, is a processed surface application, used to enhance the Aspect Ratio property for the Stainless
Steel SMT Stencil.
The Process is permanent and will withstand all Standard SMT Process, required to maintain any SMT
solder paste print process.
The proprietary process is applied to the Standard Datum PhD material: Below is the Basic Datasheet info
for this material:
Chemical Composition(%)
C Si Mn P S Ni Cr Fe
</= 0.08 </=1.00 </=2.00 </=0.045 </=0.033 8.00­ 18.00­ Bal
10.50 20.00
Mechanical Properties
Hardness (HV) Tensile Strength (N/mmsq) Yield Strength (N/mmsq) Elongation(%) Surface Roughness
(Ra um)
370­410 >/=1000 Reported Reported Reported
The proprietary process is focused on the aperture design, enhancing the 2 major factors in screen printing,
Mechanical seal and Paste Release properties.
The COBRA process has produced stable results when the A/R is challenged with component
miniaturization print requirements. The COBRA process has been applied to 3­6 mil stencil products, with
very impressive results.
The COBRA has been recorded to maintain its process capability in excess of 200K print strokes, although
this is subjective to the process where the COBRA stencil is applied.
The process stability is proven for all technology forums.
All COBRA stencils are 100% inspected to meet the Stencil design requirements, prior to shipping.
Please Contact: (For further Information)
Jim Villalvazo
JV@Interlatin.com.mx
+52 1 899 163 8433

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