Electronics Forum: flex boards (Page 8 of 33)

Cracked ceramic chip capacitors.

Electronics Forum | Thu Apr 10 19:19:01 EDT 2003 | stevemoore

Are you gluing the parts to the board? We had a similar situation where the glue beneath the component would add a 'fulcrum' point to the center of the device and when the board flexed the part would fracture.

curing methode adhesive glue

Electronics Forum | Tue Apr 04 02:46:39 EDT 2000 | George Verboven

We are looking for a way to cure conductive adhesive. I heard about curing times from 2 hours and more. But I also received information that curing can be done in 10 minutes at 120 C. Of course it also depends from the type of glue. But the question

Stencil Inspection

Electronics Forum | Tue Mar 22 14:07:43 EDT 2011 | remullis

I've never done flex boards so I cant't say what tolerances you would need to maintain. Does you stencil manufacturer provide a QA data sheet with your stencils? If so I would specify to them the critical apt sizes in areas and push it back on them t

MyData My9 "no z indicator value at all"

Electronics Forum | Wed May 04 19:38:57 EDT 2022 | mikevb

I have a used MyData My9 machine that I've picked up recently and it has a problem with initializing that I can't figure out. It just gives an error stating "no z indicator value at all". I've replaced the flex board with the force sensors but that d

Board Support for Double-Sided PCBs

Electronics Forum | Fri Apr 30 15:11:53 EDT 2004 | pjc

MPM has a new board support system called GelFlex. It can be used on UltraPrint 2000 machines as well as AP series, UP1500 and AccuFlex models. For more info, go to http://www.speedlinetech.com/mpm/gel-flex.aspx also, contact Chris Wild at Speedline

Re: BAS32 diode broken

Electronics Forum | Wed Jan 26 07:55:17 EST 2000 | Dave F

Mikel: There's a lot of ways to break a glass diode. Poor material handling High placement force Thermal stress Board flex So, where is this damage occuring? Dave F

Same pattern of capacitor crack

Electronics Forum | Thu Nov 13 13:07:04 EST 2008 | vladig

Yes, it does look like a typical crack due to mechanical overloading (bending) of teh component. Usually because of the board flexing Vlad

Conformal Coating Flexible PCBs

Electronics Forum | Thu May 09 12:39:00 EDT 2019 | slthomas

We have never coated flexible circuits, although these guys apparently do as a part of their FC fabrication services: https://gcaflex.com/why-is-conformal-coating-important-for-flex-printed-circuit-boards/

Design dilemma

Electronics Forum | Thu Aug 23 11:19:40 EDT 2001 | Hussman

Hi delnosa, Sorry about being 10 days late - don't get to the bottom of the page much. I'm working of layering flex circuits sandwiched between FR4 layers. The flex is primarily designed to take the place of interconnects like yours. I work in ap

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 07 12:25:32 EST 2005 | Rob

Hi CW, Larger chip caps can be susceptable to cracking, but mainly this is due to handling - flexing of boards is the main culprit (the part being mechanically joined at both ends to the board). PCB's usually flex easiest along one axis, and larger


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