Electronics Forum | Mon Jan 21 11:41:39 EST 2019 | SMTA-Tony
Lead free HASL coatings can be susceptible to yellowing during reflow due to oxidation of the tin in the coating. Some HASL solder suppliers use anti-oxidant additives in the solder to limit or prevent yellowing of the coating. You may want to ask
Electronics Forum | Tue Apr 05 12:32:16 EDT 2022 | proceng1
Here are the nozzles that soaked, but didn't get tinned. Since the solder joints also had yellow, I am wondering if the contamination is lingering in the solder pot, and getting on the joints. The Superior is never applied to a board. In the board
Electronics Forum | Mon Jul 27 12:24:29 EDT 1998 | Bill Schreiber
Ablestik 20021 Susana Rd. Compton, CA 90221 Tel: 1(310) 764-4600 Fax: 1(310) 764-2545 Grace 55 Hayden Ave. Lexington, MA 02173 Tel: 1(617) 861-6600 Fax: 1(617) 861-9590 Emerson Cumings makes a yellow. However, I do not have any contact info. Good luc
Electronics Forum | Thu Jan 10 02:16:09 EST 2019 | ameenullakhan
Hi Steve, Thanks. This from the trusted supplier. HASL finished PCB. Even PCB supplier is using the water wash flux for fabrication. Its almost eliminated with N2 environment. And we had got a expert view from Dr. Lee of Indium on the issue st
Electronics Forum | Tue Jun 13 12:45:22 EDT 2000 | Peter Field
Help!!! We are using Fuji CP6 machines. The nozzles use those gloss yellow (sort of fluorescent) disks to provide contrast between the component and nozzle for centring. My operators keep damaging the disks causing the machines to need recalibratio
Electronics Forum | Tue Jul 28 10:59:07 EDT 1998 | Jose Moreno
| Dear sirs, | please help me to fing a company whicjh produces white or yellow adhesive UV curing glue for SMT components assembly ,i need names and contact fones and faxes for those company ,i need any company but not Alphametal or heraues | th
Electronics Forum | Tue Jul 28 10:55:54 EDT 1998 | Jose Moreno
| Dear sirs, | please help me to fing a company whicjh produces white or yellow adhesive UV curing glue for SMT components assembly ,i need names and contact fones and faxes for those company ,i need any company but not Alphametal or heraues | th
Electronics Forum | Fri May 30 08:24:08 EDT 2008 | cyber_wolf
The nozzles get centered at zero degrees and 180 degrees. I believe the yellow asterisk is the measurement at zero degrees, when it rotates to 180 is when you will get a red X or a green O. (In other words the yellow asterisk is normal) I think you
Electronics Forum | Sat Jun 25 15:20:03 EDT 2016 | skipper6567
I have a mini/micro transformer that is mounted on a pcb inside my lowrance gps/plotter. I have removed it from the pcb. It has 5 through hole pins, 3 pins out bottom one side and 2 pins out bottom on opposite side. The transformer has yellow tape ar
Electronics Forum | Fri Jan 13 18:35:53 EST 2023 | stephendo
I think that the top secret part is mounted on a flex rigid board. And it only looks like it is a display with a ribbon connected to the yellow board. I think the yellow board and white board were made with the flex connection and the display mounted
