Electronics Forum | Thu Jan 02 08:04:06 EST 2020 | philc
You might want to try baking the LED's in an oven for 24 hours prior to build. We keep our LED's in a humidity cabinet all the time, as we have noticed poor solderability if they are left out for too long. This may be even more important when buying
Electronics Forum | Wed Dec 11 14:38:25 EST 2019 | slthomas
The one thing I haven't seen mentioned yet is developing the the control systems for the process equipment and materials. You don't want to mix up your solder paste, bar, and wire, and you don't want to cross-contaminate by using equipment (solderi
Electronics Forum | Thu Dec 26 15:27:22 EST 2019 | emeto
Lead Free SMT 1. Stencil printer Squeegees s -should have Pb free pair 2. Reflow oven - should be able support Pb- free higher temperatures. 3. In case you have inspection table on the SMT line - should have Pb-free mats(usually different color)
Electronics Forum | Mon Jan 06 11:51:04 EST 2020 | stephendo
It is not all of the product. It is per separable homogeneous material. A 0402 coil could be broken into at least a half dozen pieces and each piece is separate. Look at the size of a single 0402 joint. How much lead would 0.1% be? Not much. A custom
Electronics Forum | Tue Dec 10 09:56:09 EST 2019 | charliedci
Have been looking for rental/lease of above calibrator in US. Companies we have contacted are: Transcat, TRS, BHD, ATE, Electrorent, Techrentals, Vantage with none available. We have 2, one is out for repair. We will be purchasing another but 4 week
Electronics Forum | Wed Dec 11 12:07:33 EST 2019 | scotceltic
Our company has a spec on their current PCB dwg to make sure the fab house meets a specific thickness (min-max). The current spec reads: 13.5um min - 38.5um max. I assume it is to keep the board house honest and to make sure there is no exposed co
Electronics Forum | Thu Dec 12 17:39:14 EST 2019 | davef
When I hear "pinholes" in solder connections, I think of two sources, depending on the situation, which can be either: + Entrapped air and process chemicals develop during reflow soldering to cause the pinholes in and around the intermetallic layer
Electronics Forum | Thu Dec 12 17:48:21 EST 2019 | davef
You proved that the standard solderability test of components may be effective for assessing aged components. Curious Minds Can you get the authorization to use a more aggressive flux? Will that flux solve the problem? What's it going to cost to qu
Electronics Forum | Fri Dec 13 12:29:01 EST 2019 | davef
I'm not conversant in the topic, but I know suppliers to the government are concerned as you are. I have attended sessions on the topic at technical conferences. The topic that you want to search for is long-term storage protocols for electronic comp
Electronics Forum | Tue Dec 17 05:58:36 EST 2019 | robl
We had a customer who used XRF to determine the thickness of the "tinned" layer of components - sort of what is briefly mentioned in Bob Klenke's SMTA paper - http://www.circuitinsight.com/pdf/Solderability_Testing_Protocols_Component_Re-Tinning_Me
