Basic Tools for Surface Mount.
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From: qrk on 1 Feb 2010 13:43 On Mon, 01 Feb 2010 10:38:36 -0800, qrk <SpamTrap(a)spam.net> wrote: >On Sun, 31 Jan 2010 11:17:17 -0600, "RogerN" <regor(a)midwest.net> >wrote: > >>I'm needing to get some basic tools for surface mount stuff. Already have a >>heat gun and soldering station plus basic electronic instruments, meters & >>scope. >> >>Need magnifier, would the head band type or a clamp on arm lamp/magnifier be >>best? Or both? >> >>I guess tweezers? Do you use some sort of paste to hold components or just >>hold them down and solder? >> >>Any other items to consider? Panavise with circuit board holder? >> >>Thanks >> >>RogerN Forgot about tweezers. I like smooth fine tip for small parts. Serrated tips are nice for large parts like SO8. The serrated tips are usually pretty large, so I grid the thickness down so I can get in tight places.
From: Jim Yanik on 1 Feb 2010 14:20 qrk <SpamTrap(a)spam.net> wrote in news:ns6em5t76gl1olja2qa1tq1uti6ak6ihso(a)4ax.com: > On Sun, 31 Jan 2010 11:17:17 -0600, "RogerN" <regor(a)midwest.net> > wrote: > >>I'm needing to get some basic tools for surface mount stuff. Already >>have a heat gun and soldering station plus basic electronic >>instruments, meters & scope. >> >>Need magnifier, would the head band type or a clamp on arm >>lamp/magnifier be best? Or both? >> >>I guess tweezers? Do you use some sort of paste to hold components or >>just hold them down and solder? >> >>Any other items to consider? Panavise with circuit board holder? >> >>Thanks >> >>RogerN >> > If your only doing this for hobbby, then magnifier on a head band will > work. I've used the head-band type of binoc magnifier,and they're a PITA. I much prefer a clip-on binocular magnifier;it's the binoc lens from the head-band type,but without the restrictive headband frame. You can look around the magnifier,you can use it with bifocals or with the supplied lensless frame. I'd suggest a vacuum desoldering iron/station. the solder-suckers and solder wick can easily remove the pads along with the solder. -- Jim Yanik jyanik at localnet dot com
From: Falk Willberg on 1 Feb 2010 15:26 Am 31.01.2010 18:17, schrieb RogerN: > I'm needing to get some basic tools for surface mount stuff. What kind of SMT? SO-8 is as simple as DIL-8 except you don't have to drill holes. BGA is really hard to handle. QFN is a pain, TQFP is almost simple. Resistors and the like smaller than 0603 are ok (if it's visible, it can be soldered), except when it falls down to the floor. You will not find it, forget it ;-) > Need magnifier, would the head band type or a clamp on arm lamp/magnifier be > best? Or both? I have both but I only use the arm lamp/magnifier (from Ebay for ~50�). People told me, that USB microscopes are very good for small parts and checks (~50�). > I guess tweezers? Yes, but for larger components positioning can be better using your finger. .... > Any other items to consider? Panavise with circuit board holder? My brother's father-in-law, a watchmaker, recommends to put the parts you are working on, as close to your eyes as possible. The height of chin or nose ist best. Make sure your hands have support. Four Digikey catalogs are ok ;-) Have fun, Falk, http://falk-willberg.de/loetkunst.html
From: Nico Coesel on 1 Feb 2010 16:39 Falk Willberg <Faweglassenlk(a)falk-willberg.de> wrote: >Am 31.01.2010 18:17, schrieb RogerN: >> I'm needing to get some basic tools for surface mount stuff. > >What kind of SMT? SO-8 is as simple as DIL-8 except you don't have to >drill holes. > >BGA is really hard to handle. QFN is a pain, TQFP is almost simple. > >Resistors and the like smaller than 0603 are ok (if it's visible, it can >be soldered), except when it falls down to the floor. You will not find >it, forget it ;-) > > >My brother's father-in-law, a watchmaker, recommends to put the parts >you are working on, as close to your eyes as possible. The height of Bad idea because of the resin from the solder splattering around. I see a lot of people advising thin solder and fine tips. I advise against that. Use flux and all you can use thick solder and a thick soldering tip and make better solder joints. A fine soldering tip cannot transfer enough heat even if the part or pin is very small. The whole trick of soldering fine pitch is not to solder pin by pin but solder a few pins at the same time and let the flux do the hard work. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico(a)nctdevpuntnl (punt=.) --------------------------------------------------------------
From: Falk Willberg on 1 Feb 2010 17:21 Am 01.02.2010 22:39, schrieb Nico Coesel: > Falk Willberg <Faweglassenlk(a)falk-willberg.de> wrote: > >> Am 31.01.2010 18:17, schrieb RogerN: >>> I'm needing to get some basic tools for surface mount stuff. >> >> What kind of SMT? SO-8 is as simple as DIL-8 except you don't have to >> drill holes. >> >> BGA is really hard to handle. QFN is a pain, TQFP is almost simple. >> >> Resistors and the like smaller than 0603 are ok (if it's visible, it can >> be soldered), except when it falls down to the floor. You will not find >> it, forget it ;-) >> >> >> My brother's father-in-law, a watchmaker, recommends to put the parts >> you are working on, as close to your eyes as possible. The height of > > Bad idea because of the resin from the solder splattering around. Ok, I assumed that there is some kind of lens between solder and eyes. > I see a lot of people advising thin solder and fine tips. I advise > against that. Use flux and all you can use thick solder and a thick > soldering tip and make better solder joints. A fine soldering tip > cannot transfer enough heat even if the part or pin is very small. The > whole trick of soldering fine pitch is not to solder pin by pin but > solder a few pins at the same time and let the flux do the hard work. I agree to that. But a fine tip (#8) on my 30 years old 35W Weller is doing much better than a 3mm tip on a new 50W electronically regulated (cheap) soldering station. Without a solder mask on self made PCBs I don't want to rely on the flux doing the hard work. Falk
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