discoloration

"discoloration" search results in the Electronics Forums



115 results found for "discoloration" in the Electronics Forums

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soldermask color change around vias

Apr 10, 2019 | I wonder if this discoloration isn't delamination. I'd discuss it with my board fabricator.

Solder Joint Discolouration

Jan 4, 2019 | Hi, We are observing solder joint discoloration ( yellow color appearance ) in one of assembly af

SMD ceramic capacitors

Jul 20, 2018 | We have some MLCC capacitors that show some discoloration, or spots. Does anyone know if this will

Non-conductive epoxy discoloration

Feb 26, 2015 | Hi, has anyone experienced discoloration of cured non-conductive epoxy? It turned from white to deep

PCB with stains bleach after flux aqueous wash

Feb 11, 2015 | A-610E, 10.7.4 covers solder mask discoloration. Use that for your disposition In a previous thre

Disposition on Discoloration of Boards post reflow

Dec 30, 2013 | A-610E, 10.7.4 covers solder mask discoloration. Use that for your disposition

Disposition on Discoloration of Boards post reflow

Dec 26, 2013 | Hi , During one of NPI trial ,we found that boards ( CEM -1 grade )has got discolored on the maskin

Dark Solder Joint

Dec 7, 2011 | If this is a water soluble flux, then the discoloring is caused by the still active flux microetchin

Conformal Coating Discoloration

Aug 30, 2011 | Guess the better question is why are the resistors and FETs heating to the degree that they discolor

Saponifier Wash Process

Mar 7, 2011 |

GF discoloration

Feb 22, 2011 | Hi everyone, Our FA team recieved the defect unit from our customer, and the issue is GF discolor

Silkscreen turns Purple

Sep 9, 2010 |

Stain on PCB from reflow oven

Apr 16, 2010 | Looks like a simple variance in the solder mask discoloring. Shawn

White Solder Mask Discolored after Reflow Oven

Aug 15, 2009 | Help, experiencing discolor of a white solder resist paint after reflow of 250 degree, it turned yel

Black Pad?? (PICTURES)

Oct 20, 2008 | The discoloration/shadow appearance is a clear sign of black pad which is from nickel corrosion in t

Black Pad?? (PICTURES)

Oct 20, 2008 |

Immersion Silver - Yellowing

Sep 12, 2008 | While you're waiting for others to reply, check these recently posted threads on discolored immersio

Imm Silver tarnish?

Aug 30, 2008 |

Imm Silver tarnish?

Aug 29, 2008 |

Imm Silver tarnish?

Aug 27, 2008 | We have an immersion silver board that has a brown discoloration after processing. It's not flux re

Profile board usage

Oct 25, 2007 |

PCB pad contamination

Aug 21, 2007 |

blackened/black solder

Mar 28, 2007 |

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