Electronics Forum | Tue Aug 13 10:09:10 EDT 2013 | dyoungquist
We have a Heller 1707EXL that we use for lead and lead-free production. It has both a mesh belt and edge rails. We run 90% of our assemblies on the mesh belt (leaving the edge rails wide open). I have noticed when profiling a board on the mesh bel
Electronics Forum | Thu Feb 13 03:49:15 EST 2014 | jlawson
Yes all above is correct, as solder deposits get smaller and mesh T4+ , actual metal to air contact surface area increases , say in contrast to T3, add to this less flux , and flux running away from the joint, re-oxidation and what flux is left, can
Electronics Forum | Thu Feb 27 18:07:13 EST 2014 | emesystems
The ISL12020 real time clock comes in a 20 lead DFN, and includes a 32kHz crystal in the package. The terminals of the crystal and oscillator come out to external pads and are highly susceptible to leakage to the neighboring power supply pins. With
Electronics Forum | Mon Feb 16 12:33:58 EST 2015 | ianatvadatech
Hey Syed, I've been running the MV-9 for just over a year. We shopped around very extensively (two APEX shows) before switching from yestech to mirtec and we bought two of the best systems they had to cover the four lines we run. Two systems are fa
Electronics Forum | Tue Sep 15 12:27:59 EDT 2015 | sumote
The key to longevity in any automated soldering machine is in the preventative maintenance. If the machine has had regular maintenance preformed on it, your job will be that much easier. The 1st thing I would do is to either throw out the solder t
Electronics Forum | Sat Oct 03 12:33:02 EDT 2015 | rushpcbuk
Electronic digital methods of determining unsoldered leads/pins Unsoldered lead or pins in a PCB or any other electronic components leads to open circuits or faulty electrical connections thus the device does not operate. Typical inspection method
Electronics Forum | Wed Feb 03 11:31:20 EST 2016 | steprog
Hi, New to this forum. I am an engineer assigned to resolve a quality issue on our production line. It seems that we have been getting small droplets of flux on our boards after the reflow process. Occasionally, they land on a board to board conne
Electronics Forum | Tue Mar 08 15:35:43 EST 2016 | fuji_user_2014
I am having problems with LGA solder balls under the devices. Here are some of the details: 1. There are only 2 affected parts @4 locations. 2. The parts are LTM4616EV#PBF and LTM4608AEV#PBF. 3. We are using a ramp soak spike profile. 0-100secs=r
Electronics Forum | Fri Jun 03 09:25:00 EDT 2016 | sumote
If you are going to stay in business more than 5 years buy a non-Chinese made machine. Flame me if you want, but that is my opinion. Here is some of the best advice I could offer you: Call the tech-help line of any equipment you are considering bu
Electronics Forum | Fri Nov 18 09:21:41 EST 2016 | sumote
Lazy operators empowered by management. Sounds like you may have some nepotism? Since it falls to you to clean up someone else’s mess I have an idea for you. I once worked for a company that had a large wash sink with a hand sprayer very similar to
