solder problem

"solder problem" search results in the Electronics Forums

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

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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


Dec 18, 2014 |

Moisture sensitive ICs in repairs/refurb

Jun 7, 2013 | In thirty years of Electronic service I have never had problems with moisture in boards when hand so

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

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

baking out pcbs after reflow process

Jul 5, 2012 | Probably they had a problem with a certain product, tried baking, the problem went away and ever sin

PCB Delamination

Aug 4, 2011 | Hi All, I'm facing a problem is the PCBs are having delamination issue which after SMT reflow pro


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 |


Jul 7, 2010 |


Jul 6, 2010 | Sean, We can't comment on the EDX report; but, we have seen these types of problems before. We


Oct 9, 2009 |

non-wet on 0402 mounted on OSP & lead free paste

Oct 18, 2008 | Sounds like a part problem. You can SOMETIMES over come this with a hotter profile. We see this a

Urethane Coating (1A33)

Aug 27, 2008 |

Atmel QFP's

Dec 6, 2007 | I am looking for people that are having problems primarily with test of their product after reflow/p

What is delta t?

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

Time to retire the wave?

May 22, 2007 | The soltec Selective solder machine is great and the software is much beter than that of the wave ma

BGA via in pad

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

Ag/Pd Component Finish

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

SN100C: High Temp

Jan 20, 2006 | Hi "theSaint", We are using SN100C in our wave solder machine. As far as the solder itself, the w

Fine Pitch Stencil Design

Dec 14, 2005 |

White Residues

Aug 16, 2005 | Peter: Questions are: * From your pictures, the white residue appears to be only on the solder mask

TH Crystals

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

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 (

Pasteproblemater aftersoldering

Feb 6, 2005 | can some one give me some suggestion to solve the problem. we are using cooksun/alphametal rma9086 p

Stencil Thickness

Dec 15, 2004 |

Lead Free ...

Sep 2, 2004 |

SMT gold plated components

Aug 6, 2003 | This is an old topic, but keeps coming up. Solderability and reliability issues with SMT gold plated

Routing Under Chips

Jul 3, 2003 |

bending PCB Panel

Jun 17, 2003 |

Sn plated

Apr 13, 2003 |

BGA Rework

Apr 10, 2003 | Hi, that post sounds very bad.But I thing you shoul make an order for that problem.First the proble

BGA PCB Pad size

Jan 19, 2003 |

0201 caps

Dec 2, 2002 |

0201 and uBGA

Sep 23, 2002 | On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's

AlphaMetal WS1208

Aug 27, 2002 | Do you have some experience with solder paste WS1208. What is the "best" conditions for printing pro

0201 and uBGA

Jun 5, 2002 | Hello! I have a strage problem, we made some production with uBGA, BGA, 0201, 0805, and other t

gold connectors

May 31, 2002 |

Paste Dispensing

Jan 10, 2002 |

Second Pass In Wavesolder

Dec 31, 2001 | Dear all: We had a severe curvature in our boards after wave soldering.Could a second pass in the

Excess Flux in uBGA rework

Sep 25, 2001 | Scavenge all the old solder off the board and the chip. Micro screen paste to the chip. As far as th

Used PCBA Equipment

fluid dispensing pumps for integration