solder mask surface energy

"solder mask surface energy" search results in the Electronics Forums

338 results found for "solder mask surface energy" in the Electronics Forums

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Minimum Component Spacing with Minimum Solder Mask Width of 4mils

May 19, 2014 | Consider this combination: * IPC-7351B - Generic Requirements for Surface Mount Design and Land Pat

trace surface finish

Sep 8, 2013 | Protect the board: If solder mask protects the board, the level of protection is limited and inconsi

trace surface finish

Sep 8, 2013 |

trace surface finish

Sep 8, 2013 | PCB designers specify the application of solder mask [eg, varnish, solder stop mask, solder resist,

trace surface finish

Sep 6, 2013 | Why do PCB traces need a surface finish? On microstrip (top/bottom) the solder mask does not help

Soldering to hard gold

May 6, 2013 | Gold in solder alloys can be brittle. We always used to talk about keeping gold LT 3% in order to av

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.

PCB Surface Question - Picture attached

Mar 24, 2010 | Hi Itzik, it looks like you receive a board from your manufacture that they did solder mask rewor

Conformal Coat peeling

Apr 9, 2009 | We have different Solder mask 'gloss' and 'satin' the gloss has a surface energy =40 dynes. The test

Conformal Coat peeling

Apr 5, 2009 |

problem in solderability

Sep 10, 2008 |

Solder balls

Jul 17, 2008 | Which type? * Solder beads (mid-chip solder balls, attached to the waste line of your chip caps and

Micro Solder Balls in No Clean Selective Solder Process

Jan 15, 2008 | Based on past, actual, hands-on experience, I have found that the PCB mask finish makes a HUGE diffe

Scratches on BGA solder resist

Feb 27, 2007 | IPC-A-600G, 2.9 Solder Resist [Solder Mask] [snip]"Solder resists are used to limit and control the

Overprint, solder flow back

Dec 6, 2006 | Successful solder paste overprint is a function of the solder paste rheology, solder mask and throug

Wave Solder Balls, VOC-Free Flux, and Glossy Mask

Oct 3, 2006 | With recent implementation of VOC-Free flux in our shop, we've experienced little solder fines/balls

Fine pitch wave soldering

Sep 15, 2006 | If the package is robust enough to handle surface mount followed by a pass through the wave solderin

Fighting solder beads

Mar 21, 2006 | 1 Chatter about mask opening � No BIG problems with these statements. It�s just that you may need t

Solder mask discoloration

Aug 17, 2005 | Peter are you having fun with solder masks erwat? We saw this years ago with LPI solder masks. I

Solder mask discoloration

Aug 17, 2005 | We have encountered what appears to be mask discoloration after wave soldering. The areas of conc

kapton dots and liquid solder mask

Aug 10, 2005 | Is the peelable mask (put on by the boardhouse) flat on the surface of the pcb? If so can you tell m

Ammonia in Peelable solder mask compatability to lead free

Jun 22, 2005 | The only thing ammonia can do is tarnish copper and make it more difficult to solder. And the high

Peelable Masking

May 12, 2005 |

Selective soldering justification

May 9, 2005 | They are expensive so you need to have a lot of jobs that take a long time to hand solder or have a

Leadfree dip soldering

May 9, 2005 |

Solder dust

Mar 9, 2005 | We don't have experience on this, but first we'd talk to a technical type at our solder paste suppli

Coating adhesion problems

Sep 21, 2004 | Q1: What is "enough surface free energy"? A1: Look here for background:

PCB Surface finish

Jul 5, 2004 |

Immersion Silver Reliability

May 26, 2004 | Some peelable solder masks attack immersion finishes. It appears components in the peelable solderm

Gold surface contam after prebake 150C for 3 hrs

Apr 7, 2004 | thanks Dave, solder mask use is AUS 5 from Taiyo ink, solderability of the contam area is still pass

Gold surface contam after prebake 150C for 3 hrs

Apr 6, 2004 | hi, i encounter gold surface contam issue on wire bonding ring after prebake at 150 C for 3 hrs

White Hazing under the solder mask of a through hole board

Nov 7, 2003 | I have seen in the last couple of months more boards with a white hazing under the solder mask. I ra

PCB Surface Finish

Jun 19, 2003 | Which is the best surface finish to be used on non- solder mask defined pads in terms of cost and re

Accidental solder mask

Dec 17, 2002 |

via masking

Dec 13, 2001 | There is neither �nominal thickness� nor �is there a set maximum� for via masking. We use some of o

Can we hide extra long pad with solder mask ?

Nov 9, 2001 | Go for it!!! You were unspecific, but adding mask to a completed board could cause: * Increase

Solder Mask Specification

Oct 24, 2001 |

Solder Beads

Aug 15, 2001 | Just as there are a number of causes of solder balling there are also several factors which can lead

Solder webbing @ Wavesolder

Feb 6, 2001 | Now that's surprising that your board fabricator would say the mask was cured properly [without even

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pcb components vacuum pick up

Panasonic CM402, CM602, DT401