[sdiy] TDA2030, 2040 & 2050 discontinued.. and counterfeit parts..

Ben Bradley ben.pi.bradley at gmail.com
Thu Oct 25 03:32:15 CEST 2018


I recall using this LM1875 as a replacement for, I think it was the
TDA2030. I was looking around and noticed the pinouts are the same and
specs close enough, but as always, double-check for yourself:
https://www.digikey.com/product-detail/en/texas-instruments/LM1875T-LF05/296-43520-5-ND/3640532
On Wed, Oct 24, 2018 at 9:23 PM Jean-Pierre Desrochers
<jpdesroc at oricom.ca> wrote:
>
> Thanks !
>
> -----Message d'origine-----
> De : James Grenert [mailto:grenert at gmail.com]
> Envoyé : 24 octobre 2018 21:14
> À : Jean-Pierre Desrochers
> Cc : SYNTH DIY
> Objet : Re: [sdiy] TDA2030, 2040 & 2050 discontinued.. and counterfeit parts..
>
> BG Micro seems to have them.  They are a reputable source in my experience.
> https://www.bgmicro.com/AUD1075.aspx
>
>
> On 10/24/18, Jean-Pierre Desrochers <jpdesroc at oricom.ca> wrote:
> > Hi everybody,
> >
> > I need to replace a dead TDA2030 power amp in a small keyboard I have.
> >
> > The problem is that this IC is obsolete so I ordered some from an eBay
> > Chinese seller..
> >
> > Fortunately I had some originals in one of my parts bin to compare with
> >
> > the new Chinese to come..
> >
> > Then the TDA2030's were delivered.. tested them.. Hmmmm.. bad news..
> >
> > The genuine STMicroelectronics delivered clean 1khz sinewave on a 8 ohms
> > load.
> >
> > The Chinese ones showed bad crossover distortion with 3rd harmonics  with
> > some oscillations
> >
> > on the same load. I contacted the seller for a refund.
> >
> > Looking Pentawatt cases of an original and the chinese's I saw differences.
> >
> > See both cases here:
> >
> > http://www.arcenson.com/public/TDA20xx.jpg
> >
> >
> >
> > eBay sellers don't always show the real part package they will deliver to
> > you
> >
> > so I'm a bit scary to go there.
> >
> >
> >
> > Does anybody have a good source for genuine TDA2030, 2040 and 2050 ??
> >
> > Thanks.
> >
> >
> >
> >
>
>
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