[sdiy] PCBA

Ullrich Peter Peter.Ullrich at kapsch.net
Tue Mar 28 22:34:02 CEST 2017


iTeadStudios in China offer PCB assembly services.

I have already ordered PCBs (very cheap and professional quality) but I never let them assemble the PCBs.
But I bought ready made modules from them and the quality was very fine.



Von: Synth-diy [synth-diy-bounces at synth-diy.org]" im Auftrag von "MTG [grant at musictechnologiesgroup.com]
Gesendet: Dienstag, 28. März 2017 17:30
An: synth-diy at synth-diy.org
Betreff: Re: [sdiy] PCBA

I haven't but I'm interesting in it for exactly the same reason as you.
If there are other similar services on the planet that folks have used
that would be good information too. In my case I'm looking at low
quantities (100 or less).


On 3/27/2017 2:22 PM, john slee wrote:
> I'm considering dipping my toe in the assembly waters as a hobbyist
> experiment... Any folks here tried Seeed Studio's PCBA service? I've
> happily used their PCB service for some years now. I figure I'd use them
> for all the SMD parts, and do the through-hole parts (ideally just
> pots/switches/jacks/big caps) myself.
> I like their "open parts library" concept as a way to simplify the
> supply chain part of the process, and it looks complete enough for most
> if not all circuits I'm interested in
> John
> On Thu, 23 Mar 2017 at 20:23, <rsdio at audiobanshee.com
> <mailto:rsdio at audiobanshee.com>> wrote:
>     I'm sure they use paper tape everywhere they can, because it should
>     be cheaper. But you can't put chips in paper because they're too
>     thick. A few of the larger capacitors come in plastic, so I think it
>     must be the size of the part that is the primary determining factor.
>     You really only need to be concerned with this if you have a
>     pick-and-place machine, because they need a specific mechanism for
>     each size of tape. I pay other people to do SMD, so they worry about
>     this - not me. However, the assembler usually is happier if I buy at
>     least ten or a dozen extra parts so that they have room to get the
>     tape fed into the mechanism - and that process usually eats a
>     handful of parts.
>     Every data sheet has specifications for the available tape options.
>     Chips will often be available in a tray or a tape, and it depends
>     upon your assembly process as to which one you want. Mouser
>     typically carries every option, and the price can vary. My poor
>     assembler has to adapt to whichever version I can find cheaper in
>     the quantities I'm buying. I only do prototypes anyway, so they
>     don't complain for small runs. When a product goes to full
>     manufacturing, the story changes significantly.
>     Brian
>     On Mar 22, 2017, at 10:34 PM, cheater00 cheater00
>     <cheater00 at gmail.com <mailto:cheater00 at gmail.com>> wrote:
>     > It turns out the tape is really easy to use since I can pry it open
>     > with the tweezers that I'll use to pick up the part anyways.
>     >
>     > I've noticed that while the semiconductors were in plastic tape, the
>     > resistors were in paper tape. Is this usual? Do they always come on
>     > paper tape or do some come on plastic tape, and which is more usual?
>     >
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