Electronics Forum: overprint 0402 (9)

0402 LED TILT

Electronics Forum | Tue Nov 28 14:27:05 EST 2017 | emeto

Without the details I will tell you that you have too much paste. PCB Pad is probably way bigger than the contact lead surface of the part, you overprint, and in the oven this solder have nowhere to go and tilts your part. Check datasheet.Cutting sma

Stencil Thickness

Electronics Forum | Thu Jun 28 09:07:51 EDT 2007 | mika

Laser cut 0.13mm stencil thicknes works great for us. BTW, are we talking RoHS solder paste? We do reduce the stencil apertures to 88 % of the pads when we go for the RoHS solder paste. Otherwise we go fo 96% reduction in general with some excemption

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