0402 PARTS

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0402 PARTS - 07-/01-09 by WRONGWAY

0402 PARTS - 07-/01-09 by dwelch123

0402 PARTS - 07-/02-09 by dyoungquist

0402 PARTS - 07-/02-09 by WRONGWAY

WRONGWAY

#59162

0402 PARTS | 1 July, 2009

Hello All
We are going to run our frist 0402 parts soon. do I need
to go to .005 stencil or will .006 work ?
do I need to use a type 4 paste ?
pad design does a standard rectangle work or the round pads ? Thanks in advance for any replies.

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dwelch123

#59163

0402 PARTS | 1 July, 2009

You can use regular paste and a .005 stencil will help reduce tombstones. It's just that easy. I run 0402's all the time without any problem, just make sure your profile is a good one!

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dyoungquist

#59182

0402 PARTS | 2 July, 2009

For 0402s we use type 3 paste. We have .006 and .005 stencils. The .006 works okay but .005 seems to give us slightly better results. We use a 1:1 ratio for the aperture to match the pad, round pad not needed. With accurate placement and a correct oven profile we rarely see any issues with tombstones.

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WRONGWAY

#59184

0402 PARTS | 2 July, 2009

Thanks for the replies guys they will help me out.
this website in genral has been veary helpful
for many years.

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