solder and ball

"solder and ball" search results in the Electronics Forums

2092 results found for "solder and ball" in the Electronics Forums

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soldermask color change around vias

Jun 7, 2019 | OK good if you get really close to the two small solder balls trapped in that greasy waxy residue an

soldermask color change around vias

Jun 7, 2019 | The Single Solder ball stuck to the mask may indicate undercured as well. The issue is not so much t

CSP assembly compliance to IPC-A-610 minimum electrical clearance

Sep 12, 2018 | Hi, Is the IPC-A-610 applicable to CSP assemblies? Especially regarding the solder ball to solder

QFN84 Solder Printing Issue (QFN with Inner LGA Pad)

Nov 11, 2017 | One suggestion I have seen for packages like this is to have the device balled first.

Poor Wetting On The BGA.

Oct 20, 2016 |

Melted BGA part

Sep 15, 2016 |

pad cratering

Jul 1, 2015 |

SMT Reflow temp

Feb 25, 2015 | Hi Bartel , 1.1 Profile Solution to Cold Soldering Cause for Cold soldering The peak temp of refl

PIHR... what do you think...?

Jun 10, 2014 | this is a Class II product. If I increase the openings... will I have random solder balls?

Incomplete reflow

Apr 5, 2014 | The middle picture shows what looks to be solder balls littered across the surface. Turn-up the heat

0603 LED Tilt

May 27, 2013 |

BGA Corner

Jun 10, 2011 |

OSP finish and Omnix 5002 solder paste(SnPb)

May 14, 2010 | I attached a RX picture. A lot of voids and micro balls arround the flux residue. What do you think

suggest whether we can place BGA without Bals on PCB after Print

Nov 4, 2009 | It will be very difficult to apply the proper amount of solder with a stencil to bump a ball that is

defects in pcb manufacturing

Oct 30, 2009 | Hi, I see a huge solder mask shift on chip comp pads. This would result in mid-chip solder balls or

BGA failure after coating

Oct 5, 2009 | we suggest as below : the first : check the soldering(solder ball and pad) by X-ray ; second: to d

Humidity question

Oct 16, 2008 | We don't associate solder balls with no-clean flux and humidity. For solder balls with no-clean flux

Tented Via's

Feb 21, 2008 | if you are not using them for test points or want them filled with solder for current carrying capab

BGA Voids

Feb 12, 2008 | Thanks for the spare change. Questions are good and I did miss one item. Process has 100% solder p


Sep 6, 2007 | Can voids be carried over from original voids in solder balls during reflow?

Homeplate design

Jul 25, 2007 | Hi Lloyd, Homeplates will get rid of solder balling. They are only recommended "backwards" for 0

Copper migration

Dec 6, 2006 |

BGA crack and strain gauge measurement

Nov 29, 2006 | Dear Davef, Thanks for your input...The crack happen at the pad/solder ball interface..Pls review

LGA and Solderballs

Nov 28, 2006 | J Rose at EMPF says: The introduction of no-clean solder fluxes in electronics manufacturing has gi

Cleaning Paste from 2nd Side Print

Oct 31, 2006 | We never run raw solder paste through our board cleaner, because: * Flux floats on the water in the

Local Fiducials

Oct 20, 2006 | mid chip solder balls we had that trouble for awhile we went from a 8 mil thick stencil to 6 mil st

Water Soluble vs. No Clean

May 3, 2006 | All good points by Pee Wee Herman; your solder balling may appear if you don't currently have stenci

BGA Reflow Issue

Apr 19, 2006 | So, your solder ball didn't collapse. What is the ball material? More and more BGA are shipped lea

Stencil thickness

Mar 2, 2006 | Dis agree?!?!?! We solder plenty of them o6o3s at honda and they l00k 0k! Solder balls will always


Dec 11, 2005 | Hi, As far as I know soldering a lead free BGA in a lead process is similar to soldering down som

Why does my solder joints look so wrinkled?

Oct 20, 2005 | during the soldering process on larger BGAs the corners can bend up or down due the large copper hea

Reflow Profile

Aug 22, 2005 | There's a lot of sources of solder balls. Search the fine SMTnet Archives for previous discussions.

Reflow Profile

Aug 22, 2005 | Sample Profile to avoid solder balls.

BGA pad size

Jun 21, 2005 |

BGA pad size

Jun 18, 2005 | kenscj: Responding to your points of interest: * On the smoothness of BGA solder balls causing sol

Bga question??

Jun 12, 2005 |

Non-wetting: PTH on double-side reflow

Apr 6, 2005 | Are you saying you have solder balls (as in solder paste balls) at the lead tips (or land tip)? Thi

Pasteproblemater aftersoldering

Feb 7, 2005 | Search the fine SMTnet Archives for previous discussions on the issues driving solder balling.

Pasteproblemater aftersoldering

Feb 7, 2005 | This paste does tend to solder ball - but short of changing paste you can change your stencil to acc

Pasteproblemater aftersoldering

Feb 7, 2005 | Reducing the Printing Speed helps to reduce solder balls. Try it.

Conformal Coating BGA's

Jan 13, 2005 | We agree that coating BGA solder balls with conformal coat is a bad idea due to differences between

SMT Pick and Place

Large PCB Dispensing System