Electronics Forum | Tue Jul 06 17:03:46 EDT 1999 | Earl Moon
| Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and takes-up approximately 25% of the pad area. Th
Electronics Forum | Thu Jul 08 15:38:27 EDT 1999 | Earl Moon
| Thank you all for your replies. Thanks to your replies and backup from the IPC-SM-782A (section 3.6.3.2) and James Blankenhorn's "SMT Design Rules & Standards," the designer has agreed to provide adequate clearance between the via and the pad. |
Electronics Forum | Tue Oct 01 15:48:56 EDT 2002 | lysik
No problem. A standard stencil is OK. You want to print a half moon shape on each side of the hole. Make sure you print about X2 the size of your hole and make sure you keep the print in close to the hole. You want to print X2 the hole size as to hav
Electronics Forum | Sun Mar 15 14:10:26 EST 1998 | baruch schiffmann
we are looking for paste printing specs.& stencils holes shapes to perform soldering reliability d.o.e. of the a.m. subject. looking forward to your info. tech. dept. /telrad prod.
Electronics Forum | Wed Sep 11 15:12:02 EDT 2013 | rway
"Do you think these machines are less appropriate for smaller lot sizes and PCB's with just a few through hole parts?" That depends. It will still save time if your lot sizes are small, as opposed to hand placement. I would not recommend buying an
Electronics Forum | Tue Nov 18 09:54:49 EST 2014 | gregp
Hi Adam, Good question. I know I am seeking a lot of details. Here's the deal. Five years ago I acquired the assets of Contact Systems. Since then I have been re-manufacturing the CS-400E machine which if you are not familiar with is a light guid
Electronics Forum | Wed Nov 19 19:06:42 EST 2014 | spoiltforchoice
Plenty of people don't like cut 'n clinch and might appreciate just having the cut part. We do a mix of OEM and CEM work, because of the low volumes special tooling for a product is often out of the question so that is one thing to consider. We use t
Electronics Forum | Tue Sep 10 10:17:18 EDT 2013 | gregp
Hi Reese, Thanks for the feedback. So you have a fair amount of assemblies that are new designs with 10% through hole parts. Are these parts inserted manually? What is the soldering process?...wave solder?...selective solder? Do these components
Electronics Forum | Sun Nov 23 20:37:36 EST 2014 | gregp
Hi J_Dub, thanks for the continued info...Of course selective soldering would be very time consuming for such a through hole assembly...but 18 minutes, wow...didn't realize selective soldering could take that long. I would like to know the approxima
Electronics Forum | Wed Jul 22 15:08:29 EDT 2020 | gregp
How about Semi-Auto insertion. Only one type of machine needed to insert virtually any through hole components. The CS-400E was originally manufactured by Contact Systems and now Versatec is offering remanufactured systems...completely rebuilt to t
