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DIY Stompboxes => Building your own stompbox => Topic started by: shay1510 on December 21, 2012, 02:26:59 PM

Title: Question about IC size
Post by: shay1510 on December 21, 2012, 02:26:59 PM
Hey guys,
Sorry for the noobish question. I want to build the MAD PROFESSOR blue delay on vero, and saw that OP275 is needed.
So I've ordered from ebay op275gpz and It's realy small, won't fit any socket.
What did I do wrong?
thought about soldering wires to the 8 pins and then solder the wires to the vero. I know there's a risk damaging the IC. What do U think?

Thanks.
Title: Re: Question about IC size
Post by: haveyouseenhim on December 21, 2012, 02:36:43 PM
can you post a link or picture?
Title: Re: Question about IC size
Post by: armdnrdy on December 21, 2012, 02:39:06 PM
So what you're saying is that you mistakenly ordered the "S" surface mount instead of the "P" through hole.

As far as I know there isn't a surface mount to through hole socket available.

Instead of messing with trying to solder "legs" onto this thing, I would just get the right through hole part.


Or.....solder away and hope for the best!
Title: Re: Question about IC size
Post by: haveyouseenhim on December 21, 2012, 02:48:11 PM
Quote from: armdnrdy on December 21, 2012, 02:39:06 PM
So what you're saying is that you mistakenly ordered the "S" surface mount instead of the "P" through hole.

As far as I know there isn't a surface mount to through hole socket available.

Instead of messing with trying to solder "legs" onto this thing, I would just get the right through hole part.


Or.....solder away and hope for the best!

That's what I was thinking but wanted to see to be sure.
Title: Re: Question about IC size
Post by: davent on December 21, 2012, 02:54:09 PM
Do a internet search for soic to dip adapter and you'll get lots of hits... but it's probably going to cost less to just get the dip IC depending on the device and if it's available.

eg.https://www.sparkfun.com/products/494

or diy http://www.evilmadscientist.com/2011/basic-kludges-5-minute-soic-dip-adapter/
Title: Re: Question about IC size
Post by: shay1510 on December 21, 2012, 05:46:25 PM
Thanks for the replies. I'm going to try the DIY method described in your 2nd link.
I just dont want to wait for anothe op275 :)
Thanks again.
Title: Re: Question about IC size
Post by: armdnrdy on December 21, 2012, 10:56:31 PM
If it doesn't work out, you don't have to wait for the slow boat from China.

http://www.mammothelectronics.com/SearchResults.asp?Search=op275

http://www.smallbearelec.com/servlet/Categories

http://www.alliedelec.com/search/searchresults.aspx?dsNav=Ntk:Primary%7Cop275%7C3%7C,Ny:True,Ro:0&dsDimensionSearch=D:op275,Dxm:All,Dxp:3&SearchType=0

http://www.jameco.com/webapp/wcs/stores/servlet/StoreCatalogDrillDownView?langId=-1&storeId=10001&catalogId=10001&search_type=jamecoall&freeText=op275
Title: Re: Question about IC size
Post by: armdnrdy on December 24, 2012, 01:58:58 AM
It looks like Tayda just added them to their stock list.

http://www.taydaelectronics.com/new-arrivals/op275-op275gp-dual-jfet-operational-amplifier-ic.html