solder problem

"solder problem" search results in the Electronics Forums



4989 results found for "solder problem" in the Electronics Forums

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RF fences

Aug 8, 2019 |

Post Reflow changes To Silver Immersion Copper Traces On PWB

Feb 16, 2019 | Your silver immersion layer is dissolving in the solder. I presume this is what is meant to happen.

Poor Wetting On The BGA.

Sep 16, 2017 | An assembly with this improperly solder joints will have functional issues. We have encountered this

PCB SHELF LIFE AFTER FIRST REFLOW

Feb 9, 2015 | If solderability is the only concern, then there is no standard time. Multiple factors involving OSP

BGA

Dec 22, 2014 |

Water in TH cap sleeves

Dec 1, 2014 | We had the same problem too. Water would remain under the caps even after a bake out. We saw this nu

The part of sloder become to yellowish

Jul 29, 2014 | The solder in MB become to yellowish after thermal test (100 oC/12HR) I think the problem that is

Gold/Tin Reflow

Jun 30, 2014 | Thank you SteveO, I have also tried reflow 2nd time without any problem, but I also do not know the

QFN PCB Pad no Drain Hole

May 18, 2013 | OK, I've now read all of the documents you referenced. The problem still remains regarding the therm

Small apperture release from stencil

Feb 18, 2013 | What type of flux material does your solder paste have? I have seen difficulties when attempting to

Multiple reflows

Feb 1, 2013 | If you have a hard-gold on your pads, it's not a problem. Hard gold can give to you 4 or 5 times for

2 Hot 2 Handle

Dec 28, 2012 | I assume your problem is comming from the carrier. If it is so: 1. use carrier from another mater

2 Hot 2 Handle

Dec 28, 2012 | I assume your problem is comming from the carrier. If it is so: 1. use carrier from another ,ater

BGA Reflow

Jun 9, 2011 | You might want to check the components as well, I've seen a similar problem with re-balled parts usi

Contaminated ICs

Apr 15, 2011 | We had a similar problem with contaminated leads that was rectified by having a company strip the ex

BGA REFLOW

Jan 12, 2011 | HI Ok solder past seems to be ok, but what type do you have finihing of PCB(ENIG, immersion silver

Tombstoneing LEDs

Sep 1, 2010 |

Dewetting

Jul 7, 2010 |

BGA Voids

May 21, 2010 | hi, I have similar problem 2 year ago.BGA256 , hole in pad technology.I order PCB manifacturer to

PCB Surface Question - Picture attached

Mar 24, 2010 | These boards had solder mask issues, where manufecter took the boards and said he will rework them.

Anyone seen Black Pad on BGA components?

Jul 22, 2009 | Yes it is very usual problem with BGA components, and you can repair that with method "needle+flux+s

broken components

May 29, 2009 | The problem could be that the preheat temp of the PCB is too low on entering the bath.Also look at m

board delaminated after reflow

Apr 8, 2009 | push the "bubling" and it springs back. It does not look like solder mask. We may have to fight with

Masking with hight temp non silicone tape before wave

Feb 18, 2009 | HI again Dave, I was wondering what kind of problems you were experiencing with the silicone tap

Bottom side adheasive

Dec 18, 2008 | dyoungquist, I don't think you understasnd the process. TH parts are the problem, not SMT. How do

Pb Drying / Degassing PWB

Nov 21, 2008 | Hi , i desire to find the type of information : When the Soldering must be performed after

BGA Installation with IR unsolder

May 22, 2008 | I found out that the light is not heterogeneous, i am trying to solve this problem... from my web su

What caused this reflow issue?

Apr 15, 2008 | If the solder had formed an intermetallic then it couldn't have pulled off completely like it did, i

Epoxy on bottom of SMT component

Nov 26, 2007 | Even a slight amount of epoxy will prevent a part from soldering. Look at the part after print. If

Ruggedized PCB Assembly

Nov 22, 2007 | Paul: If your customer "resolders suspected IC lead(s), problem goes away" - It's not an 'black pad'

What is delta t?

Oct 25, 2007 | Forget all the bickering and semantics. EVERYONE IS RIGHT!! ...but then again, in soldering, there

BGA via in pad

Mar 23, 2007 | Hello, those plated and solderable via in pads have two critical points: 1. We have discovered t

double printing

Mar 21, 2007 | The biggest problem with double printing is that if the squeegee pressure and speed are correct, the

IC short

Jan 18, 2007 | How to problem solved about production reject IC short? Please advice us about setting screen mask

BGA rework with unplugged vias PCB

Dec 7, 2006 | We have our circuit board vendor put a solder mask dot over the vias after HASL process. It's a litt

Functional Test Faulure due to BGA ICs

Jul 25, 2006 | If your Test tech able to analyze and tell you which exact ball/location is the problem, you may sen

Ag/Pd Component Finish

Jun 30, 2006 | Hi All the other components on the PCB solder just fine, including resistors, ceramic capacitors,

Voids

Mar 1, 2006 | we are observing voids in solder ball bonding process using laser.Final metal finish is of Au on Cu.

CLEANINING PCB OXIDATION

Feb 3, 2006 | the flux in the solder paste should take care of the oxides. if possible print a board and run thru

Peel Mask

Jan 17, 2006 | Anyone ever see problems with peel mask causing ionic contamintion/dendritic growth? Is there a pre

SMT COMPONENTS TESTING

Jan 9, 2006 | Perhaps I read your question wrong, but I would be more inclined to look for changes in your solder

Parts Blowing off in Reflow Oven

Jun 30, 2005 | I'm not familiar with this particular oven, but have seen this problem once before. As it turned ou

Maximum Overprint

Jun 28, 2005 | Fabricators take different approaches in developing paste that is more or less prone to solder balli

TH Crystals

May 10, 2005 | We had an outside vendor that built a particular board for us. When there were problems with the ne

NanoStar

May 3, 2005 | The biggest problem is getting paste on the board. We ran a board that had 8 per and would get an oc

Non-wetting: PTH on double-side reflow

Apr 6, 2005 | Soldering PTH in reflow makes the process a lot more dependent on the physical forces in soldering (

Benchtop Fluid Dispenser

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