Electronics Forum: ams... (Page 583 of 855)

Post Reflow changes To Silver Immersion Copper Traces On PWB

Electronics Forum | Sat Feb 16 07:21:17 EST 2019 | SMTA-Joe

I am experiencing a "tarnishing" issue on PWB traces that may be causing problems with component reflow. The PWB traces are made to the following spec: SOLDER MASK OVER BARE COPPPER WITH SILVER IMMERSION PLATING PER IPC4553, PLATING TO BE 8-12 MIC

Thicker MBB Bag Punchure

Electronics Forum | Thu Feb 28 20:14:07 EST 2019 | rronaldreegan11

I have obervation that after migrate into thicker MBB bag, customer having mbb punchure at corner edge issue when shipping box is damaged at corner. There is no change of forwader or customer. Only different is thicker MBB with diffrent setting of va

3D-Printed Masking Boots For Conformal Coating

Electronics Forum | Mon Mar 04 11:49:36 EST 2019 | clockwatcher

Joe, Go for it. We purchased an Up-Box printer several years ago for exactly this reason. It was less than what they were charging us for a custom mask mold. It paid for itself within the first month. I'm not recommending this printer but I am sayin

Juki / Zevatech PM575 Calibration Jigs Source

Electronics Forum | Sun Mar 10 16:16:35 EDT 2019 | sam512bb

Good day All, I was curious if anyone has a source for Juki/Zevatech PM575 Calibration jigs? My machine's placement is off and various a bit and so it was recommended to calibration the laser alignment. Sadly, there are no service centers located a

PCBA Time Estimation Formula

Electronics Forum | Thu Feb 20 08:58:43 EST 2020 | klofgren

I'm mostly looking at the time so that I can schedule. Basically I'm looking at running 1000 panels of project A and then 500 of project B. I have a limited time to get a portion of both A and B to the customer. What I am trying to confirm is whether

Tin whisker growth testing PBfree reflow/snpb reflow

Electronics Forum | Tue Mar 26 06:07:58 EDT 2019 | pooja_4t

Hi i am referring Tin whisker report JESD201A class 2 standard from Vishay. i can see at TC -55/85C using pbfree reflow there are 0 growth at 500&1000 cycles. for snpb reflow and the same temperature and same cycle significant growth can be found. my

Small scale reflow oven

Electronics Forum | Fri Mar 29 20:07:50 EDT 2019 | sarason

I measured the temperature rise when I built the unit and it has a nice linear rise in temperature over the 3 minutes. I have used the Quikees before. The galcon gas stinks and must be evacuated. The galcon is expensive. The galcon is a perflourocar

MPM Momentum Screen Printer Paste Inspection problem

Electronics Forum | Wed Mar 27 13:47:24 EDT 2019 | whitelancer64

I am having an issue with aligning vision for solder paste inspection with the PCB in the Momentum machine. The SMT operators setup the profile on the machine, which I then import into Aegis CircuitCAM to add PCB locations. But when I export again, t

Questions About Risk of PCB Delamination as a Result of Moisture Build Up After Damage to Solder Mask

Electronics Forum | Tue Apr 23 17:18:54 EDT 2019 | laserpro

Hi Dave, Thanks a lot for your reply. After doing some process work on a Laser Etching machine it was brought to my attention by a colleague that if the solder mask was being penetrated fully, we could be at risk for absorption of moisture leading

Faster Than Lightning!

Electronics Forum | Fri May 03 09:45:43 EDT 2019 | reckless

I was hoping for more than 40k cph. I don't need too many feeders so brand is not a huge concern. Reliable, no headache operation is higher importance. I'm starting to look at newer machines but do like buying once and getting extended life out of


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