Electronics Forum | Fri Oct 01 08:15:02 EDT 2010 | rgduval
Is the stiffener a piece of FR4, or a component that needs to be installed? We've done a number of flex assemblies taht have a rigid stiffener, generally a piece of rigid flex, or FR4 that has the components mounted on it. This type of stiffener
Electronics Forum | Thu Feb 14 20:24:07 EST 2002 | scott
My first reaction would be to run! FAST! Flex -- well, it... flexes... and isn't flat. While you assemble it, While you transport it, While it goes through the oven... SMT Connectors typically need to be held down during reflow. Fiducial types are
Electronics Forum | Thu Jul 17 09:26:28 EDT 2003 | Mike J
Mike: We have provided many carriers for flex circuit applications to facilitate processing through screen print, pick-and-place and reflow and, in many cases, eliminating the need for taping the flex circuit to the carrier. Please contact me and w
Electronics Forum | Fri Sep 09 07:55:08 EDT 2005 | davef
This pattern indicates flex cracking due to excessive bending of the board or fixture after soldering. Ceramic is strong in compression, but weak in tension. When bending causes damaged parts, look at: * Board flexes, ceramic is strong in compressio
Electronics Forum | Thu Feb 15 08:34:50 EST 2007 | rgduval
Jim, In a previous life, we built some flex circuits for a customer. The configuration was a flex cable, with a circuit at one end of it. We had fixtures made out of the same material that we had selective wave solder fixtures made from. Cut an i
Electronics Forum | Mon Jan 20 11:07:18 EST 2014 | jorge_quijano
Hola We will start producing flex cables soon for a new project, we've never built them in house, we have no experience in this field, most of our products are PCBA & Backplanes. I'm guessing that I can run this cables using a fixture to secure the s
Electronics Forum | Wed Oct 30 17:11:59 EDT 2019 | etmpalletguy
Yo Ho! I'm a little late to the party, sorry! Flex can be a simple PCB to process through Screen, Pick & Place & Reflow, if the card is designed properly. 4 symmetrical tooling holes .125" diameter and 5mm in on each corner of the card. Wedge Effect:
Electronics Forum | Fri Jul 10 14:16:06 EDT 1998 | Bob Willis
As Steve said there should not be a problem with cracking plastic components but if you are reaching 180c there will be a problem with secondary reflow on the top side of the board. PCBs flex during wave soldering as they do during reflow if not supp
Electronics Forum | Sun Apr 05 09:46:47 EDT 1998 | Earl Moon
| We are looking at reflow soldering some Flexi-rigid | pcbs. I have heard that IR reflow soldering can make the Polyimide "self heat" and cause de-lamination. | Does anyone have any info. The thermal problems associated with polyimide rigid/flex de
Electronics Forum | Wed May 16 15:40:56 EDT 2012 | davef
Here's some notes from a Bob Willis presentation Assembly of Flexible Circuits with Lead-Free Solder Alloy [Bob Willis leadfreesoldering.com] * Flexible Circuit Construction ** Base Material - 0.05mm Copper 18/18 um ESPANEX from Holders Technologies
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