Electronics Forum: kester (Page 36 of 51)

QFP soldering issue

Electronics Forum | Wed Jan 14 10:07:38 EST 2004 | Patrick

More on QFP soldering issue as per Paul f original e-mail. 1. Problems occured on different PCB's, on different lines using different equipment 2. Flux residue is common in the dimple on the solder. 3. The fault occurred using both "Kester 265" & "Al

Freshman in SMT industry needing advice

Electronics Forum | Thu Mar 04 14:20:41 EST 2004 | Robert

Another question... I use 500gm jars of Kester 256. After a job is complete the used solder is collected and put back into the jar. Generally while a job is run, the jar and used paste could be left out/open for up to 4 hours. A piece of seran wrap i

Oven Profile

Electronics Forum | Mon Mar 08 15:17:50 EST 2004 | Robert

Need some suggestions on oven profile. I run a BTU VIP98 oven. Has 7 zones, convention heat and all. My profile goes (in Celcius) 150/160/170/180/205/215/180 moving at 28in/min. Roughly 5 minutes from start to finish. I use Kester 256 solder and my b

Oxidation on BGA

Electronics Forum | Tue Apr 20 20:11:58 EDT 2004 | davef

First, how oxidized are these solder balls? Will the take solder using your routine flux / paste? Second, on restoring solderability, the three basic methods you can use to restore solderability on components are: * Highly active fluxes in a retinn

contaminated components

Electronics Forum | Mon May 10 20:46:25 EDT 2004 | davef

The three basic methods you can use to restore solderability on components are: * Highly active fluxes in a retinning operation. * Surface stripping chemistry and then a standard retinning operation. * Electrochemical conversion chemistry and then a

AIM NC 298 Solder Paste

Electronics Forum | Fri Jun 18 13:17:37 EDT 2004 | Steve

I would suggest first looking into whom your local distributor is for the Aim product line. Or for that matter any solder product Alpha, Kester etc. Does the distributor stock the product at all times? I find that alot of Manufacturers and their reps

Lead Free ...

Electronics Forum | Mon Aug 30 15:41:35 EDT 2004 | Frank

Hi, In 2006 we will need to produce Lead free PCB and for now it's hard to get answer to my questions. I'm from Canada and the PCB vendors we actually have are not ready to produce Lead Free PCB ( HASL Lead Free ). For sure OSP (Entek) is not good

Sudden paste release problem

Electronics Forum | Thu Feb 10 09:30:32 EST 2005 | cyber_wolf

I am curious as to why you are using Koki ? Why are you not using a main stream paste that is proven in the industry? Indium,Kester,Multicore,AIM.... It has been my experience that when you start having paste-releasing problems out of the blue, it

Solder dust

Electronics Forum | Tue Mar 08 09:56:05 EST 2005 | caldon

Tim- You have two separate issues 1) Stencils and 2) wave. Stencils you can purchase a ultrasonic system that will remove the paste automatically or you can use stencil wipes to remove it manually. I would refrain from using towels and IPA as it dilu

Lead-Free SMD repair

Electronics Forum | Fri Apr 29 07:29:58 EDT 2005 | siverts

Steve, Thanks for Your replay and I agree with You. But sometimes I find it hard to always have the optimum in every aspect of our high mix/low volume electronics assembly production. We also do a lot of prototype production. In this case we had to g


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