Electronics Forum | Fri Mar 29 11:32:37 EST 2002 | slthomas
Thanks, Larry, more good info. I think my designer has that spec. in his library. What we DID find that while we had the proper pattern called out in our in house spec. sheet for the part, the designers don't look at the spec. sheets. They just grab
Electronics Forum | Thu Mar 21 21:21:37 EST 2002 | davef
In the beginning, there was TO-5. And it was good. Flushed with success, they created TO-220. It too was good. Then came SMT. It was better than some things, but then again ... In these early days, there was a haze on the horizon that blocked t
Electronics Forum | Mon Nov 15 21:35:50 EST 1999 | Dave F
Bob Bob: Fortunately, you found this before you built-up a lot of product. Some thoughs and other drivel: 1 Use IPC-TM-650, Method 2.4.8 for copper peel with a Instron machine. Typical pad peel strength requirement for FR-4, 2 oz. copper is: 6 l
Electronics Forum | Wed May 12 02:22:03 EDT 1999 | Richard Durrant
| Need a footpint for a 10 lead uSOIC (RM-10) | Have you tried the IPC website at www.ipc.com, they have an online land pattern calculator that not only gives you there RLP (Regisistered Land Patterns) for standard components, but also allows you to
Electronics Forum | Wed Oct 27 19:50:59 EDT 1999 | chris
Hi What is the possible cause of non-wetting of solder paste to the gold land pad. What we observed in the surface of the non-wet pad is an organic FM, and using FTIR we found out that it is a flux. It is possible that the cause of non-wetting is
Electronics Forum | Fri Sep 26 12:19:09 EDT 2008 | davef
For the IPC Land Pattern Viewer, look here: http://landpatterns.ipc.org/default.asp
Electronics Forum | Fri Sep 15 15:46:54 EDT 2017 | tey422
I have a customer want to add an SMD coil to the board, which they used to hand soldering all the time. I want to know is there footprint/land pattern size that I should follow? Any recommendation?
Electronics Forum | Wed Jul 03 14:08:10 EDT 2002 | gbriceno
I' designing a PCB with SMD components to optimize the land patterns for wave soldering. I find that the IPC-SM-782 land patterns are not robust enough for wave soldering, yielding ramdom skips and bridges. This PCB will also give me insight on sha
Electronics Forum | Wed Sep 24 04:18:12 EDT 2008 | gang
we have some problems in soldering joints such as insufficient solder and misalignment on some RC0402 and CC0402,i don't have a pic here. our SMT enginner doubts the PCB land pattern is at the fault.here is what we measured results.pad length:0.9mm,
Electronics Forum | Tue Nov 14 13:39:37 EST 2000 | Mark S
Hi All -- I'm about to design a DPAK part (case 369A-13, Issue Z)onto a PCB . The part's maximum length as given in the datasheets (On-Semi MAC4DHM) is 0.030" longer than the recommended land pattern as given in that same datasheet. (1) Has anybod
