Electronics Forum | Wed Jan 27 02:07:25 EST 2021 | davef
IPC-7525 does a good job of giving guidelines for designing stencils, including stepped stencils
Electronics Forum | Mon Nov 25 12:32:20 EST 2002 | davef
Now that is a BIG step. Stencil type: * A metal squeegee is fine with stepped stencils. * A rubber squeegee is fine with stepped stencils. Comments on step stencil "keepouts" are: * Use an ample space around the stepped down component pads that is
Electronics Forum | Thu Feb 23 19:55:30 EST 2006 | pjc
Not sure on stepped stencil designs, very application specific. Try consulting with your stencil supplier. Most of the big suppliers have applications engineering support. You can send them your board data and they can review and advise. Also, consid
Electronics Forum | Sat Aug 05 09:22:34 EDT 2000 | Dave F
Stencil, Step Down. A stencil of varying thickness that allows printing different amounts of solder paste or adhesive. Most stencil suppliers make stepped stencils Step stencils are used when there are fine pitched device amoung coarse pitched dev
Electronics Forum | Fri Jul 25 09:54:00 EDT 2014 | emeto
Hello all, what is your opinion on step stencils. Is it better to have the step on the squeegee side or on the bottom side of the stencil? Why you do it this way? What are the advantages and disadvantages?
Electronics Forum | Fri Sep 17 03:25:45 EDT 2004 | soease
Hi all, does anyone of you use step stencils for paste application? Did anyone experienced troubles with those kind of stencils? thanks for answer sly
Electronics Forum | Sat Aug 05 03:09:54 EDT 2000 | Felix
Dear Netters, Could anybody kindly advise : 1. what step stencil means 2. what are its characteristic ?? 3. What special process makes it? 4. What is the application ?? 5. Advantages and limitation ?? just short breifing is enough. Thanks Best
Electronics Forum | Thu Jan 28 22:27:00 EST 2021 | emeto
Nowadays is not a big deal to cut step stencils. Stencil houses charge you around 100USD per step in addition to your regular price. Some places are welding the step area with a very small clearance and I have to say mostly it is pretty accurate. In
Electronics Forum | Fri Feb 24 08:29:25 EST 2006 | davef
Step stencils are not widely used, due to: * Higher cost as compared to uniform thickness stencils * Danger of solder paste smearing at least close to the steps * Difficulty of cleaning the stepped stencil underside (the steps cannot be on the upper
Electronics Forum | Thu Jun 23 10:06:10 EDT 2011 | davef
Leave it to the Eurolanders to come-up with a goofy, confusing name for something simple. Stepped stencils are chemical etched or laser cut. IPC-7525 provides guidelines on designing stepped stencils. Look here http://www.ipc.org/TOC/IPC-7525.pdf
