Strengthening PCB tracks with solder? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th March 2003, 03:16 PM   #1
diyAudio Member
 
Cradle22's Avatar
 
Join Date: Jan 2003
Location: Dortmund, Germany
Default Strengthening PCB tracks with solder?

Hi!

Since my P3A PCB just arrived (rest of the parts come tomorrow, except for heatsinks and casing ), I was wondering if it would be a good idea (at least want to be sure that there's no drawback) to strengthen the PCB tracks with solder? Since ESP has no PCB coating on his PCBs, I could easily "drop" a lot of solder onto the tracks, preferabbly before stuffing the boards (heat)... ?

Or is it not worth the trouble?
__________________
************************
A Sacrifice For Freedom
  Reply With Quote
Old 14th March 2003, 03:27 PM   #2
diyAudio Member
 
trigon's Avatar
 
Join Date: May 2002
Location: Canada
Try and look for silver coating solution here. I personaly think that this would be a beter solution.
Silver coating

Hope this help

Trigon
  Reply With Quote
Old 14th March 2003, 03:31 PM   #3
diyAudio Member
 
Join Date: Jun 2001
Location: Flanders, Belgium
indeed that will be much better than heating the pcb
  Reply With Quote
Old 14th March 2003, 03:37 PM   #4
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
You may lift the traces off the PCB if you are not careful. Since these traces are already tinned I don't see much benefit, except perhaps on the heavy power traces.
  Reply With Quote
Old 14th March 2003, 03:58 PM   #5
Elkaid is offline Elkaid  Canada
diyAudio Member
 
Elkaid's Avatar
 
Join Date: Jan 2003
Location: Canada
Send a message via MSN to Elkaid
Be aware when using MG Chemical (product #421) or any other "Liquid Tin" that their use is mainly to prevent trace oxydation. It will not improve traces strength and will not increase admissible current. Moreover, liquid thin isn,t available in retail stores. You must order it in "commercial" quantities. (As stated on MG Chemical website and from my local Active Electronics store)

A thin layer of solder could do it at a certain level but I'm not sure if it worth all the hassle. Moreover, if you care about the pcb appearance, it may be hard to get a nice finish.

If the traces are already tinned, I would recommend to leave the board as it is.

Hope this helps !

Regards,
  Reply With Quote
Old 14th March 2003, 04:09 PM   #6
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Rod's boards appear to be HASLed.
  Reply With Quote
Old 14th March 2003, 04:10 PM   #7
diyAudio Member
 
cocolino's Avatar
 
Join Date: May 2002
Location: Bavaria (south of veal sausage equator)
As tiroth already pointed out correctly You may lift the traces off by overheating.
Moreover when You do this also take care not to overdo it with too much solder - the PCB may warp and bend not so nicely.
If at all I`d only slightly reinforce the high power traces where significant current flows.
Instead of using solder only, You could also use a (pretinned maybe) solid copper wire and solder it only punctually - this might be better regarding overheating traces and bending of PCB - but it`s more time consuming.
Before stuffing the PCB You should clean the PCB after the soldering job as a lot of solder flux residue will be left on the board. Spiritus (cleaning spirit - is this the right word in English ?) would do this okay (eventually repeated washing is required until the boards are really clean).
__________________
Christoph
STEAL the BEST - INVENT the REST
  Reply With Quote
Old 14th March 2003, 04:15 PM   #8
sam9 is offline sam9  United States
diyAudio Member
 
sam9's Avatar
 
Join Date: Jun 2002
Location: Left Coast
I pretty much concur with the posts above. I also note that as PCBs go, some of the traces are a tad fragile, i.e., easier to lift than what I've experienced with my own home made boards (Datak). Just be careful when you solder.

If you do manage to lift a trace don't worry. An easy and effective fix is just to take a piece of wire lead from one of the components already mounted, bend it to the shape of the damaged trace and solder it in place.
  Reply With Quote
Old 14th March 2003, 04:19 PM   #9
diyAudio Member
 
Join Date: Nov 2002
Location: Earth
I've always flux-tinned boards with a soldering iron. Unless you're a TOTAL soldering newbie or are dealing with EXTREMELY thin traces (0.5mm or less), it's perfectly salfe to manually hot-tin a board with solder.

What I do is use a butane-powered cordless (I LOVE that thing!) set to its max. temperature, and before I start I coat the entire surface with a thin layer of flux. I then touch the soldering iron to some solder to put a tiny (1mm or less) blob on the tip and use the iron to "color" the board's traces with a thin layer of the solder. When I start rubbing on copper - you can tell when you're out of solder as the surface will feel more rough all of a sudden - I repeat the touch-to-solder part and go back to "coloring" the copper.

I never leave the iron on one trace for more than a few seconds at a time. Hopscotching all over ensures the traces aren't overheated.

I've never had a board warp, nor have I lifed a trace.

oO
  Reply With Quote
Old 14th March 2003, 04:44 PM   #10
diyAudio Member
 
Join Date: Sep 2002
Location: south yorkshire, UK
I've seem more than a few commercial PCB's with the heavy current traces reinforced with extra solder ( and the rest of the board screen coated to prevent oxidation ), but then the manufacturers have the benefit of silk-screening and wave soldering machines, which we ( generally ) don't have access to.

I think the 'extra copper wire' is a splendid idea too...

ray
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best test tracks for imaging davidlzimmer Music 34 18th December 2006 04:50 PM
Paper Cone Strengthening ttvonau Subwoofers 27 26th September 2006 01:22 AM
Old tracks came alive! davidlzimmer Chip Amps 1 18th February 2006 09:08 PM
Anyone experencing CDs with missing tracks? Christer Everything Else 12 20th January 2004 04:50 PM
NOS Dac noise when changing tracks carlosfm Digital Source 14 2nd October 2003 08:17 AM


New To Site? Need Help?

All times are GMT. The time now is 01:40 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2