Electronics Forum | Fri May 23 04:22:39 EDT 2014 | andrzej
Thanks Hege. I've done some research and this might be the root couse: 1. Too thin HAL layer which leads to formation intermetallic Cu-Sn layers on surface after 1-st reflow (most probably) 2. Poor quality of solder for HAL process. 3. Problem
Electronics Forum | Mon Jun 22 10:54:44 EDT 2015 | seanrou
In our production facility, we currently have 3 different makes of SMD machines. I am wanting to look at solutions that would allow us to control kitting, traceability, etc globally across all the machines. This would need to be a standalone system t
Electronics Forum | Wed Jun 24 21:34:02 EDT 2015 | kennyg
I am struggling with a water wash process for a very small (1"x1") PCB. It has components that are very esily damaged by contact. I'm stuck with wash. I know, I know, but no-clean isn't an option. We put the board in s compartmentalized wash basked
Electronics Forum | Wed Nov 09 10:30:26 EST 2016 | jbreit
You're right. It is BS. I should have said "the operators are only WILLING to remove so much paste manually." When I brought up my concerns about leftover paste with the powers that be, I was told in no ambiguous terms that the operators will no
Electronics Forum | Tue Dec 05 04:30:02 EST 2017 | jan_pedersen
You find good information in IPC-4554 that includes recommended total Sn thickness and recommended free Sn. It refers to how much usable Sn is needed to meet coating durability categories defined in J-STD-003. As example, if you need 6 months shelf l
Electronics Forum | Fri Feb 16 03:02:02 EST 2018 | robl
100% agree with dwl. last year one of our 3rd party delivery partners got rear ended resulting in about 30% of a $120,000 shipment being written off. If it hadn't been for foam lined flight cases we would have lost the lot. Also for smaller 3rd pa
Electronics Forum | Thu Nov 01 08:33:34 EDT 2018 | robl
Hi, We are looking at updating our shopfloor batch tracking system to an individual serial number system. Usually we would develop in house but we're a bit tight on IT resource at the moment. Does anyone have any recommendations for easy to use of
Electronics Forum | Thu Mar 28 20:40:35 EDT 2019 | sarason
I built myself a reflow oven using an off the shelf 29l fan forced oven with digital controls. I then fully insulated the cavity around it with kiln fibreglass, and added a metal infill at the back as the back of the oven was just a metal sheet. Anyw
Electronics Forum | Fri Mar 29 09:05:16 EDT 2019 | SMTA-Jon
The oil is a carrier for the filler material that actually transfers the thermal energy. Without the oil, the material would just be a powder that would not be easy to apply or keep in place. You should mix the oil back in. Separation of the filler
Electronics Forum | Fri Sep 27 01:28:58 EDT 2019 | drew_holm
HI, we are trying to reduce the noise from an off the shelf pcb that will be used in the mri industry. We have been able to reduce quite a bit of noise using copper mesh but we still have more to go. So we think we now have to consider the board c
