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Laser Stencil

SMT stencil and Laser Stencil

SMD stencil (Solder paste stencil) is necessary for Surface Mount Assembly.

1.Usage:

Squeegee solder paste through the stencil, the stencil ensures the solder paste is the right amount on the right position. Then you can place surface mount components on solder paste and put it into a reflow oven.

1-210331161310648.png 1-210331161316441.png

2.Stencil Type:

The stencil is a kind of bare stainless steel sheet. It could be in a frame or without a frame. The framework is for automated stencil machines. Non-framework is for hand solder. Usually, the framework is heavier and bigger than non-framework. So the framework is more expensive to ship and might be charged for dimensional weight shipping.

1-21033116140aD.png 1-210331161415601.png

3.Existing Fiducials:

Fiducials are positioning points for automated stencil machines. The diameter of the fiducials is usually 1mm. We offered three options: none, half lasered and lasered through. Half lasered is a sunk bump, lasered through is a through-hole. Half lasered is for automated stencil machines. Lasered through is for hand solder or semi-automated stencil machine. Please note that if you choose half lasered or lasered through, but there are no fiducials inside, we’ll ignore this option.

4.Electropolishing:

Electropolishing (also known as electrochemical deburring) will remove small burrs, improve the surface quality and provide smooth inside walls for better paste release. This treatment is mainly for IC lead width less than 0.5mm and BGA chips.

Check APOLLOPCB stencil capabilities in the following table:

 No.

  Item

  Process Capability Parameter

1

  Stencil type

  Framework,Non-framework

2

  Size

  370*470mm-500*1400mm

3

  Thickness

  0.15~0.25mm

4

  Existing fiducials

  Half lasered,lasered through

5

  Electropolishing

  YES

13

  Other Options

 Frame and Stencil size can be customized.


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