Electronics Forum: iron (Page 21 of 71)

Hand-Solder Pre-Heat

Electronics Forum | Fri Apr 30 10:34:16 EDT 1999 | Ryan Jennens

Mornin! We just had vendor in here pitching a "low-temperature rework system" which was intriguing, but too expensive. He did get me to thinking though, beyond heating ceramic caps before hand-soldering them, it seems like it would be advantag

Using solder paste in rework

Electronics Forum | Sun Apr 25 10:28:46 EDT 1999 | Joe Cameron

Hello all, Been doing some comparisons on joints made using the soldering iron versus reflowed solder paste (on a QFP package). The difference is quite significant: the joints made by the soldering iron are inconsistent and in many cases not filled

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 18:07:38 EDT 1999 | Tom B.

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Re: Shielding

Electronics Forum | Thu Mar 04 17:10:19 EST 1999 | Earl Moon

Our vendor proposed to supply us with shields made out of Cold Rolled Steel (CRS) electroplated with Sn (50 - 150 minches). Should I be concerned with solderability or are there a better alternatives to tin finish? No matter the base metal, elec

Fresh solder generating more dross

Electronics Forum | Wed Sep 16 08:46:50 EDT 1998 | Chrys

Hi Folks, Need to draw upon the vast expertise in this forum... Whenever you fill a new wave solder machine with fresh bar solder, it seems to produce more than the normal amount of dross for a few weeks. I always understood this to be the solder "c

Re: 1206 Jumper

Electronics Forum | Thu May 28 08:56:12 EDT 1998 | Earl Moon

I have a component that is glue cured on the bottom of a pcb. The component is a 1206 size jumper. It is made up of iron/nickel alloy. The problem I am having is that the part will fall off the board during wave solder. Is the component not abl

Re: MI Solder temp & RF routing

Electronics Forum | Mon May 11 13:59:53 EDT 1998 | Chris Fontaine

Hello. 1 Could anyone tell me the range of temperature to solder MI components? The process eng is using 400~500 degrees Celcius!! For standard 0805/0603 chips & TH components & also to touch up on ICs. What is the con

Re: MI Solder temp & RF routing

Electronics Forum | Wed May 13 16:39:41 EDT 1998 | Herb Pabes

Hello. 1 Could anyone tell me the range of temperature to solder MI components? The process eng is using 400~500 degrees Celcius!! For standard 0805/0603 chips & TH components & also to touch up on ICs. What

Wave Solder Machine Maintenance

Electronics Forum | Wed Nov 28 18:24:05 EST 2001 | mparker

Back in the days when pots, skillets, etc. were made of cast iron, vegetable oils were used to "season" the iron to prevent rusting and also from the food sticking to the pot during cooking. It would be reasonable to believe that you could use the sa

Oxidation on BGA

Electronics Forum | Tue Apr 20 20:11:58 EDT 2004 | davef

First, how oxidized are these solder balls? Will the take solder using your routine flux / paste? Second, on restoring solderability, the three basic methods you can use to restore solderability on components are: * Highly active fluxes in a retinn


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