Electronics Forum | Mon Jun 25 09:08:22 EDT 2001 | Dave G
What type of board finish ? I've seen this same defect with QFP's on some of our HASL boards. Best I can tell either the PCB's have poor solderability or uneven pad heights due to poor solder leveling at the PCB fab. Newer PCB's seem to yield bette
Electronics Forum | Sat Jun 30 04:43:09 EDT 2001 | brendan
Hello We introduced OSP finish on some of our products but now need to add some discretes at the end of the process. From my little knowledge of OSP, this is difficult. We'll SMT the boards and transfer them to another site for further processing.
Electronics Forum | Mon Jul 16 21:29:03 EDT 2001 | davef
Cleaning RMA with water is bad news. It will turn your solder connections white and remove none of the RMA residues. There was a thread on removing RMA within the past two weeks on SMTnet. Check the fine SMTnet Archives. Additionally, look at M
Electronics Forum | Thu Jul 05 21:42:28 EDT 2001 | davef
Most of our boards are fabricated with solder mask over bare copper [SMOBC], but we have couple where the solder isn't removed before masking. And ever so offin they's a liddy bit mo' solder than we'd like, which when reflowed, ends-up connecting so
Electronics Forum | Fri Jul 06 00:22:49 EDT 2001 | DL
Thanks Dave, and yes we can leave the solder there in this instance. These panels, 12up, are NCMR from the customer. The customer is saying that after the panels have been reflowed 5 times! solder starts to accumulate under the mask. Get this, My sen
Electronics Forum | Thu Jul 19 22:12:52 EDT 2001 | davef
We don't use the connector that is giving you soldering problems. Regardless, no one here is taking bets that you'll get pay-back from increasing the length of the locking pin. If it makes you feel any better, we'd bet against a 4-40 flat head and
Electronics Forum | Sat Jul 21 08:45:10 EDT 2001 | davef
In the past, we have spoken [typed?] about controlling the temperature and humidity of our plants. And it's probably good to do that from solder process control, ESD danger reduction, and human factors stand-points. We are looking to lower our ener
Electronics Forum | Thu Jul 26 02:20:37 EDT 2001 | mugen
Hey, hey, hey !!!! why do we always think of the BIG names, eh? give the underdog a chance, manz! We evaluated the METCAL bga rework station, (they only have one model going, no worry, its loaded with smart innovations) we gave it thumbs up, 2 thu
Electronics Forum | Thu Jul 26 22:15:57 EDT 2001 | davef
Every time you see one of those �National Geographic� articles showing pictures of clothing sweatshops in developing countries, the girls are sitting at gray Juki sewing machines. Juki placement machines were branded and distributed in the Americas
Electronics Forum | Thu Jul 26 06:39:19 EDT 2001 | nifhail
How do you guys monitor your feeder's history/record. Is there any database available in the market to keep track feeders in your line such as caliration's due date, last calibration dates etc. ( basically the historical data for individual tracking)
