[nleahcim]

Hi - I was wondering if somebody might be able to suggest a brand/series of through hole mounted DIP sockets that would be well suited for audio applications? I need to pick up a couple 8-DIP sockets for a CMOY - and I'm not totally sure which to get. Oh - and preferrably could you suggest one that is stocked by Mouser/Digi-Key/Newark? Thanks!

 

[null]

I don't think there are any "audio-grade" DIP sockets per se; just buy gold-plated ones and you'll be set.

 

[Megaptera]

Check Tangent's tutorials for a gold-plated socket's part number, or just search whichever distributor you like for "gold plated socket". Make sure it's DIP-8 and you're set.

 

[Pars]

Digikey A400 for the 8 pin ones are my favorite (Aries).

 

[Zemo]

I'm of the opinion that the fraction of a centimeter of conductor that is going to be used by the dip socket is going to have 'nil effect on the audio signal, especially if the dip socket isn't impeding the function of any IC plugged into it. I've never seen an IC with the specifications "only mount in a gold plated dip socket or it'll oscillate like mad!"

I, however, use the gold plated ones mentioned in tangent's guide because they're good and solid feeling, and built well.

-Z

 

[Garbz]

I'm with Zemo on this one. I've seen two types. One has flat tabs in the side and the other has machined sockets. I use the latter for it's solid feel.

 

[MaxW]

Same here, the better ones look like this BTW:

They kind of have a tappered holes and you can feel the difference when inserting the opamp.

 

[nleahcim]

Quote:

Originally Posted by Pars Digikey A400 for the 8 pin ones are my favorite (Aries).

It's funny you say that one - as that's the socket I had been planning on using! Only thing I'm worried about is that digi-key links me to this datasheet: http://rocky.digikey.com/WebLib/Arie...08-3518-10.pdf - which has a capacitor on it, which I don't really want...

But then in the catalog: http://dkc3.digikey.com/PDF/T043/0285.pdf it's shown without a capacitor, but I also don't see any notch or whatever it's called to signify pins 1 and 8.

Odd...

 

[MD1032]

Here are pics of the one tpg slapped in my amp. These were taken when I was doing my op-amp comparison.

Sorry, they're fuzzy, but you get the idea.

 

[nleahcim]

Quote:

Originally Posted by MD1032 Here are pics of the one tpg slapped in my amp. These were taken when I was doing my op-amp comparison. http://img.photobucket.com/albums/v451/MD1032/DSCF5166.jpg[IMG] [IMG]http://img.photobucket.com/albums/v451/MD1032/DSCF5164.jpg[IMG] [IMG]http://img.photobucket.com/albums/v451/MD1032/DSCF5163.jpg[IMG] [IMG]http://img.photobucket.com/albums/v451/MD1032/DSCF5162.jpg[IMG] Sorry, they're fuzzy, but you get the idea.[/i] [/td] [/tr] [/table] Do you know what brand/model those are?

 

[MD1032]

Sent tpg an e-mail, I'll post back when I know.

 

[AndrewFischer]

Quote:

Originally Posted by Zemo I'm of the opinion that the fraction of a centimeter of conductor that is going to be used by the dip socket is going to have 'nil effect on the audio signal... -Z

True.

Crappy sockets can cause an intermittant connection or add noise due to poor contact. I'd stay away from any dual leaf tin plated socket for this reason. Gold Plated machined pin sockets like the Digikey A400 should be fine.

Any socket will also add a very small amount of capacitance between the IC pins. I doubt I could hear it. If your ears can hear the difference between a $20.00 RCA cable and a $100.00 RCA cable omitting sockets is worth a second look.

 

[roadbuster]

Quote:

Originally Posted by AndrewFischer Any socket will also add a very small amount of capacitance between the IC pins. I doubt I could hear it. If your ears can hear the difference between a $20.00 RCA cable and a $100.00 RCA cable omitting sockets is worth a second look.

The capacitance is negligible. What's "important" is the series inductance that
you'll add by using DIP sockets with long leads, and that's only important if
you're running your circuit at 100MHz or higher. Our feeble ears can't tell the
difference.

 

[Pars]

Quote:

Originally Posted by nleahcim It's funny you say that one - as that's the socket I had been planning on using! Only thing I'm worried about is that digi-key links me to this datasheet: http://rocky.digikey.com/WebLib/Arie...08-3518-10.pdf - which has a capacitor on it, which I don't really want... But then in the catalog: http://dkc3.digikey.com/PDF/T043/0285.pdf it's shown without a capacitor, but I also don't see any notch or whatever it's called to signify pins 1 and 8. Odd...

The ones I use (A400-ND) don't have a capacitor built-in. I like these versus the MillMax and Assmann sockets they carry because they are more resistant to pulling pins if you remove the socket... the AE7313 which I have also used loosens up and can actually pull a pin socket. The Aries are some sort of blue plastic base and seem to be more heat-resistant. Yes, I agree that the machined socket aspect is far more important than the gold plating. There has been some talk of the gold plated socket versus the tin plating on most DIP chip leads and adverse dissimilar metals reactions, but I haven't seen any problems associated with that.

 

[AndrewFischer]

Is anyone using Augat AG10D series sockets?

Mouser part number 506-508-AG10D

http://www.mouser.com/index.cfm?hand..._pcodeid=50601

http://www.mouser.com/catalog/specsheets/506500DI.pdf