|
|
Paste Mask Question |
Post Reply 
|
| Author | |
Tom H 
Admin Group 
Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5874 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: Paste Mask QuestionPosted: 24 May 2018 at 6:19am |
|
If you use Rectangle Pad Shape, the Paste Mask aperture will be Rounded Rectangle, so you might as well use Rounded Rectangle for the pad shape too.
|
|
 |
|
|
|
|
|
|
vavouris
New User 
Joined: 18 May 2018 Status: Offline Points: 4 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 May 2018 at 6:15am |
|
Thank you! That was fast.
|
|
|
|
|
Tom H
Admin Group
Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5874 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 May 2018 at 6:08am |
|
For Standard SMD pads the Paste Mask aperture size is 1:1 scale.
For Thermal Tab pads the Paste Mask Reduction is between 40 - 60%. |
|
|
|
|
vavouris
New User
Joined: 18 May 2018 Status: Offline Points: 4 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 May 2018 at 5:50am |
|
Hi,
I'd like to ask what is the general guideline for paste stencils. Should the stencil be same size as the pad, smaller or greater? I know that in BGA packages we want very few solder paste on the pad. And on other packages, I was creating a paste mask figure 70% of the pad. I am a bit confused now, and I don't know if should continue to do that or leave it 1:1 and let the assembly plant deal with it. Thanks, Theocharis
|
|
|
|
|
Post Reply
|
|
| Tweet |
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options