Electronics Forum: holes (Page 1 of 318)

Through holes

Electronics Forum | Thu May 09 00:08:01 EDT 2002 | techment

Could someone provide help regarding IPC's recommendation on Plated Through hole's --- lead to hole ratio. I can't find it in IPC-2221 and IPC-SM-782. Thank you very much

Through holes

Electronics Forum | Thu May 09 17:24:11 EDT 2002 | davef

First, SM-782 elates to surface mount pads. So, expecting to find PTH design rules there is a bit of a stretch. Search the fine SMTnet Archives for similar threads. For instance here�s one from last week: http://www.smtnet.com//forums/index.cfm?fu

Home plate aperture holes

Electronics Forum | Fri Jul 13 14:56:01 EDT 2001 | stevenamacdonald

One of our board vendors recently switched their stencil design to home plate apertures. Since the change the quality and yield of their PCB's has went south, Could this process change be the cause?

Home plate aperture holes

Electronics Forum | Mon Jul 16 14:38:22 EDT 2001 | ohboy

If your pad designs don't meet IPC recommendations, using home plate may have adversely affected the (possibly marginal) placement tolerances. This could also be caused by an incorrect home plate design, which IPC has also given recommendations for,

Home plate aperture holes

Electronics Forum | Fri Jul 13 19:08:55 EDT 2001 | mparker

Home plate apertures are designed to reduce or eliminate solder balls that occur when placing a chip and reflow of the solder. This aperture type is usually desired when processing with a "no-clean" solder paste. The design of the aperture is usually

Through holes in SMT pads

Electronics Forum | Tue Jul 06 15:06:35 EDT 1999 | Mike Demos

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. This

Soldering wires to through holes

Electronics Forum | Fri Dec 09 11:00:47 EST 2011 | davef

Using common wire size and through hole diameter, we'd expect that the wave solder process would completely fill the through hole and that you wouldn't need to get involved in providing stencil openings, pasting the through hole or reflowing the jump

Soldering wires to through holes

Electronics Forum | Wed Dec 07 17:43:31 EST 2011 | mikenil

Hi I do not work for a board house but a manufacturing facility where we do a considerable amount of soldering wires to through holes. We pretin our through holes on both sides of the PCB prior to reflowing the solder and installing the conductor (w

Via holes and Wave Solder

Electronics Forum | Tue Mar 07 08:48:55 EST 2006 | samir

Our ICT Guy here at my company loves to use lots of via holes as test points - via holes which are 0.040" diameter, and spaced at 0.004" edge to edge spacing! He doesn't like to tent the via's either, so I always battle via-to-via shorts at the wave

Wave Solder Non wetting holes

Electronics Forum | Thu May 19 07:06:59 EDT 2005 | py

have you some GND layer inside the pcb ? see IPC 610 A

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