SOT-23's Stencil Geometry

Hopefully, everybody suffers from solderability of SOT-23 devices and I would like to know how everybody else resolves this problem. Historically, here, we have always gone for 6 thou stencils. I found that going to an 8 thou stencil improved the situation drastically. I am also going to trial some SC59 packaged devices (meatier Japanese SOT-23 equivalents). Secondly, how much aperture reduction do people go for to achieve optimum results ? 2 thou overall ? 20% ?

Regards & thanks for popping by,

Chris.

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| Hopefully, everybody suffers from solderability of SOT-23 devices and I would like to know how everybody else resolves this problem. | Historically, here, we have always gone for 6 thou stencils. I found that going to an 8 thou stencil improved the situation drastically. | I am also going to trial some SC59 packaged devices (meatier Japanese SOT-23 equivalents). | Secondly, how much aperture reduction do people go for to achieve optimum results ? 2 thou overall ? 20% ? | | Regards & thanks for popping by, | | Chris. | High Chris, you might check your pad design cause we don�t have any problem with 6mil stencil + 15% reduction.

regards Wolfgang

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| | Hopefully, everybody suffers from solderability of SOT-23 devices and I would like to know how everybody else resolves this problem. | | Historically, here, we have always gone for 6 thou stencils. I found that going to an 8 thou stencil improved the situation drastically. | | I am also going to trial some SC59 packaged devices (meatier Japanese SOT-23 equivalents). | | Secondly, how much aperture reduction do people go for to achieve optimum results ? 2 thou overall ? 20% ? | | | | Regards & thanks for popping by, | | | | Chris. | | | High Chris, | you might check your pad design cause we don�t have any problem with 6mil stencil + 15% reduction. | | regards Wolfgang | Typically, I've used either a 2 mil or 10% reduction on a 6-mil foil with great success.

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