QFN packages

[James]

This is a very noob question but I'm going to ask anyways.

I'm looking at using an IC that only comes in a QFN package - any ideas if
its feasible it would be to mount that on a home-printed pcb? Can you get
sockets for them?

Thanks,

 

[Bob Stephens]

On Thu, 26 Aug 2004 18:54:45 +0100, James wrote:

This is a very noob question but I'm going to ask anyways.

I'm looking at using an IC that only comes in a QFN package - any ideas if
its feasible it would be to mount that on a home-printed pcb? Can you get
sockets for them?

Thanks,

Check out Bellin Dynamic Systems at www.beldynsys.com
They make surface mount to through hole adapters for a wide variety of
SMD's including QFN. Carried by Jameco.


Bob

 

[Spehro Pefhany]

On Thu, 26 Aug 2004 18:54:45 +0100, the renowned "James"
<james@jamesvarga.com> wrote:

This is a very noob question but I'm going to ask anyways.

I'm looking at using an IC that only comes in a QFN package - any ideas if
its feasible it would be to mount that on a home-printed pcb?

Sure, with a decent rework station or even just a good electronically
controlled hot air gun. With a less good (tm) one it would take more
practice and you might ruin some stuff.

Can you get sockets for them?
Thanks,

You can get sockets for just about any package, but the cost might be
prohibitive. I'd be surprised if they were much less than $100-150 US
apiece.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Uwe Bonnes]

In sci.electronics.misc James <james@jamesvarga.com> wrote:
: This is a very noob question but I'm going to ask anyways.

: I'm looking at using an IC that only comes in a QFN package - any ideas if
: its feasible it would be to mount that on a home-printed pcb? Can you get
: sockets for them?

Often QFN packages are high power and rely on the bottom pad being soldered
to a ground plane also for thermal reasons. A socket will defeat that
purpose.

I soldered recently a TPS40052 with solder paste and reflow to a homemade"
PCB. Had to remove three shorts with unsolder litz, but things worked.

Bye

--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------