DFM will say don't do this.

Should work if in an office environment.

Consider when a billboarded part is allowed.
Part is taller than it is wide.
There are constraints.

On Mon, Oct 10, 2016 at 5:24 AM, Avni Selim Özçukurlu <
[log in to unmask]> wrote:

> Hello Steve,
>
> I am in Turkey (Turkey is country☺) I am reading your e mails now. Your
> ladies are very crazy or hardworking ☺
>
> Our capacitor’s document like attachment. Firstly we applied solder paste
> (Amtech nws-4200 type-3) to pads then reflowed. I will apply your
> suggestion that “everything was done by hand except for the cap on the very
> bottom, it was machine placed.”
>
> For Design for manufacturability (DFM), is it right height of component? I
> have not a dfm handbook. Anybody please send me a link for download the DFM
> handbook.
>
>
> Selim
>
> From: Steve Gregory [mailto:[log in to unmask]]
> Sent: Friday, October 07, 2016 8:20 PM
> To: TechNet E-Mail Forum; Avni Selim Özçukurlu
> Subject: Re: [TN] smd component height
>
> Hello Avini,
> Five capacitors?! Wow, that's quite a stack! I worked with some ladies in
> the past where we did quad stacks and that was pretty tough, especially
> since they were 0402's. What size caps are you stacking? Do you dispense
> any solder paste on the terminations?
> With the stacks that were done in the photo below we had to do it in two
> stages, we did the first layer of two capacitors and reflowed the board,
> then did the second layer of two capacitors and reflowed things one more
> time:
>
> http://stevezeva.homestead.com/files/Quad_Stack.JPG
> Yes, these are 0402's and everything was done by hand except for the cap
> on the very bottom, it was machine placed. Then paste was dispensed by hand
> on each cap termination and then the stacked cap was hand placed. I don't
> know what we paid those ladies, but it wasn't enough...
> Steve
>
> On Fri, Oct 7, 2016 at 10:02 AM, Avni Selim Özçukurlu <
> [log in to unmask]<mailto:[log in to unmask]>> wrote:
> Hello All,
>
> I have a question about smd assembly. In the attachment, there are five
> capacitors that mounted like POP. It's height is 10mm. Is there any
> constraint about height of smd components in the IPC-A-610 or any IPC.
>
> We have a trouble about Reflow process for 10mm-component. Solder is not
> run towards to top and it happens cold solder.
>
>
> A.Selim ÖZÇUKURLU
> Aselsan MGEO - CCA Production and Test Engineer
>
>
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> Dikkat:
>
> Bu elektronik posta mesaji kisisel ve ozeldir. Eger size
> gonderilmediyse lutfen gondericiyi bilgilendirip mesaji siliniz.
> Firmamiza gelen ve giden mesajlar virus taramasindan gecirilmekte,
> guvenlik nedeni ile kontrol edilerek saklanmaktadir. Mesajdaki
> gorusler ve bakis acisi gondericiye ait olup Aselsan A.S. resmi
> gorusu olmak zorunda degildir.
>
> ######################################################################
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>
> This e-mail message is privileged and confidential. If you are
> not the intended recipient please delete the message and notify
> the sender. E-mails to and from the company are monitored for
> operational reasons and in accordance with lawful business practices.
> Any views or opinions presented are solely those of the author and
> do not necessarily represent the views of the company.
>
> ######################################################################
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