[sdiy] Latvian CEM Synth IC clones

[jarno.verhoeven at ziggo.nl]

Seeeeeedstudio does offer cheaper stencils now, keen on giving it a try (especially since I cannot handsolder BCM847bs anymore).
------ Origineel bericht------Van: Mikko HelinDatum: di, 13 mrt. 2018 12:50Naar: CC: synth-diy at synth-diy.org List;Onderwerp:Re: [sdiy] Latvian CEM Synth IC clones
QFN soldering by using a hot plate?
On Tue, Mar 13, 2018 at 1:20 PM, chris <chris at chrismusic.de> wrote:
Can QFN be hand-soldered without an oven?

Chris



On Tue, 13 Mar 2018 11:10:51 +0000 paula at synth.net wrote:

> Tom,
>
>   For me it's a size thing. I mean consider, a VCO, VCF, VCA and ADSR in
> a 4mm squared package?? I mean you've got a synth voice in such a small
> space. Small space = lower cost and better thermal coupling if you have
> multiple voices.
>
> Paula
>
> On 2018-03-13 10:22, Tom Bugs wrote:
> > Can you expand a bit on that Paula?
> > I've never really considered them...
> > Is it mainly a size thing or am I missing something
> > interesting/important?
> >
> >
> > On 13/03/2018 10:16, paula at synth.net wrote:
> >> QFNs are awesome.
> >>
> >> On 2018-03-13 09:00, Roman Sowa wrote:
> >>> I've read somewhere that they don't do SOIC for anything greater than
> >>> 16 pins, but can't remember exact explanation. In general it was in a
> >>> spirit of "SOIC sucks". In every Alfa QFN chip they say about center
> >>> pad greatly improving thermal stability.
> >>>
> >>> Roman
> >>>
> >>> W dniu 2018-03-12 o 22:34, Jay Schwichtenberg pisze:
> >>>> Wonder why they didn't do the AS3320 as a SOIC. Maybe they didn't
> >>>> have 18 pin SOIC packages and had QFN packages.
> >>>>
> >>>> Jay S.
> >>>>
> >>>> *From:*Synth-diy [mailto:synth-diy-bounces at synth-diy.org] *On Behalf
> >>>> Of *cheater00 cheater00
> >>>> *Sent:* Monday, March 12, 2018 12:27 PM
> >>>> *To:* synth-diy mailing list
> >>>> *Subject:* [sdiy] Latvian CEM Synth IC clones
> >>>>
> >>>> Of interest
> >>>>
> >>>> http://www.alfarzpp.lv/eng/sc/application.php
> >>>>
> >>>>
> >>>>
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