Surface mount help please (converting to DIP).

[gorohon]

I ordered some LM13600's for a Ross phaser project and I guess I was in a hurry and didn't notice that I had ordered the surface mount type.  It would'nt be so bad if I had ordered them recentley, but these were part of an order from mouser about a year ago (a huge order consisting of any part that I could forsee needing for a while).   So, needless to say I'm probably out of luck on returning them.  

Here's what I'm thinking:  Solder leads to the SMT's and plug them into a socket.  

For those who have worked with these, please give me any more advice that you may have concerning adapting these things to work in a thru-hole application.  Are these SMT's more delicate--heat, ect.?  I will look for the data sheet just to make sure that pinout and such is the same, but if someone knows off the top off their head, be my guest and tell me.

[toneman]

what was the size of the chips?
the 13600s are only about 60cents each.
a small daughterboard adapter would easilly cost several times that.
also, would U B able to solder the surfacemounts?
when mouser sent me surfacemount when i had ordered dip,
they didn't ask for them back.
i still have them...some opamps i think...
stayDIPED
tone

[gorohon]

Yeah,  they're not expensive, just hate seeing things go to waste.  I didn't want surface mount; I just spaced when ordering.  Heck,  If I burn them up I won't be out much.   It beats shipping charges.  But, if I need to, then I'll order more of the right kind.

[Peter Snowberg]

If they're in SOIC .050" packages, bend up every other lead (2, 4, 6, etc.)and you're left with 1/2 the pins on .1" centers. Get some double sided pad-per-hole proto board with plated throughs and fill the hole up that will take pin #1 with solder. Set your "bent-up" SOIC down with pin 1 sitting on the filled in hole and touch it with a fine tip on an iron at about 550 degrees (F) to re-flow the solder and attach pin 1. Now carefully solder the remaining pins. For a 14 pin SOIC this would be pins 3, 5, 7, 14, 12, 10, and 8. Use #30 wire to connect pins 2, 4, 6, 9, 11, and 13 to the next row of pads out from the chip and then make your destination connections to those pads.

[gorohon]

That's a good idea, thanks!

[zachary vex]

mouser still might take them back, giving you credit against the replacement order.  call them with the original invoice number (usually it's printed right on the sticker on the product bag or tube) and tell them your dilemma.

[gorohon]

Maybe I'll try that instead.

[Peter Snowberg]

You could also etch a PCB....

SOIC packages are (to me) much easier and faster to solder than DIPs if you solder one corner first, followed by the opposite corner (now you have all the rest of the pins aligned), followed by the rest of them in any order you want.

The idea is to use reflow soldering where the pads are already tinned and soldering the chip in place simply means touching the iron to pin 1 followed by the opposite corner, etc. Just 1/2 second of touching and it's done. Next pin!

Nobody says that you need to drill any holes in an etched PCB. Viva Surface Mount!

[gorohon]

Thanks guys!  Peter, the soldering suggestions are helpful.  I'll have to get rid of my worn down tip and put on a new one.   I'm putting the phaser on hold for a bit.   I've decided to finish an amp project that I started a couple of months back.