Component Printing Templates

Based on its long work on BGA rework and repair process and its in-house capability to produce metal stencils BEST can provide for you a timely, cost-effective solution for printing on to components for MOST rework systems.

Our templates for printing on to components allows you to  print on the underside of components prior to rework. This procedure is designed for use on BGAs, CSPs and QFN/LGA bottom terminated packages. Many times it is used for space constrained components where stencil access is limited by the close proximity of adjacent components. 

The rework process is straight forward, The component to be placed is inserted into the ”pocket” of the stencil fixture. This pocket is designed for the part to fit reasonably snuggly on to the pocket while still being able to be extracted later.  That it is why it is always a good idea to send the stencil supplier a mechanical component sample to make sure the "fit up" is correct. The fixture is “flipped” over whereby a stencil pattern is exposed. On this side solder paste is rolled via a micro squeegee across the bottom of the device. Proper stencil aperture engineering is required for good paste release. The fixture is then aligned to the tooling holes for the VJT 1800 rework machine on the rework machine of choice and the pick tube “picks” the printed component form the fixture.

Unlike the machine manufacturers themselves there are (2) main reasons to pick BEST for this type of tooling. First of all BEST has lots of experience in reworking thousands of BGAs-so we can design the right tools for the job. We own SRT rework systems are very familiar with them. Secondly, unlike the machine vendors, all of this work is done under one roof where we can control the quality, the costs and lead time.

Shipment is 3 business daysfrom approval of checkplot.