Electronics Forum | Mon May 06 11:49:20 EDT 2002 | Jacob
Hello all, I am having soldering issues with an Everlight component it is a TM4201/TR2 (Right angle IRDA with a 1mm pitch). The problem I have is that after reflow the solder joints look perfect, but during test we are losing 7 micro amps as soon as
Electronics Forum | Thu May 30 10:59:41 EDT 2002 | Hussman69
Diamond/sqaure shapes are good for when you X-Ray the BGA as stated above. The only problem is if you you over print too much, you can get solder beading. I recommend round pads to avoid the beading and use X-Ray to make sure you reflow correctly.
Electronics Forum | Tue Jun 17 15:52:51 EDT 2003 | russ
Is this a single sided or double sided board? We run the first side flat on the oven belt this keeps the board flat for the second side assembly. If the board warps during the second reflow process we will make a support fixture to carry the PCBA
Electronics Forum | Fri Apr 09 01:41:35 EDT 2004 | Mike Konrad
Although water soluble (OA) flux is technically the easiest flux to remove, it is also the most damaging type of flux if not removed. A dishwasher lacks the pressure and nozzle design to produce the very small water particle size required for thorou
Electronics Forum | Fri Jul 30 01:13:27 EDT 2004 | yukim
Hi, We are based in Korea, a manufacturer of electronics for automotives. We are a small company, so no "corporative discount" is applicable to us. We currently have 2 SMT lines and are about to invest one more. Our production is high mix / low volu
Electronics Forum | Tue Jan 03 06:51:50 EST 2006 | Slaine
Is this a new design or have you manufacted these in the past without a problem. we manufacture ceramic arrays from X7R and COG, X7R has a differnet dialectric strength so higher capacitor values can be achived. With the introduction of RoHS the term
Electronics Forum | Mon Jun 19 22:19:40 EDT 2006 | Nathan
Dear All, We plan to setup an assembly line for our small volume production of PCBs (about couple hundred PCBs per week). The board has about 150 components (less than 30 types) and a few BGA and IC (majority is SMT, only few THT connectors). We hav
Electronics Forum | Thu Sep 28 07:57:58 EDT 2006 | cpm
Hi, Expert, Currently, I'm facing a very critical problem on my HAL leadfree finishing PCBs at my customer end. We run the HAL leadfree (Tin, cu and ni) board by using HAL leadfree machine (temperature about 270 deg.C) and go for normal water post c
Electronics Forum | Mon Mar 21 02:41:29 EDT 2011 | kemasta
Hi It's me again. Our products need to pass a chamber test 45c/36hrs after the PCBA completed batch of functional tests and assemble in to case. We found 1 unit was functioning for 24hours in the chamber, but hang after that. We tried to re-boot the
Electronics Forum | Tue Jul 25 07:37:21 EDT 2017 | stephendo
There are lots of examples of changing a parameter in one direction to fix one issue causes a different problem. Once I asked a layout engineer to adjust thermal relief for through hole parts. First he said ok but a day later he said that he couldn't
