Electronics Forum | Sat Apr 04 03:24:41 EDT 2009 | monduran
Our company is in the market to replace the $50 toaster oven we use to reflow boards with something that can actually achieve even temperature and a proper reflow curve. We are a RnD type company and have no need for volumes. Though we have some heav
Electronics Forum | Thu Dec 10 19:15:07 EST 2009 | swag
We like to keep one fully populated SMT golden per product (high volume) with t-couples soldered to it. We have best results using high temp. solder to attach t-couples (most permanent). 1) Remove all production solder from the part you are wanting
Electronics Forum | Mon Jan 18 10:49:22 EST 2010 | pcbrookie
Hello all, One of our resistor arrays is becoming detached from its balls after reflow. This is the second instance of this happening. The balls are clearly soldered to the board, but the actual package is coming off (package pads are quite bare).
Electronics Forum | Fri May 13 14:08:39 EDT 2011 | eezday
This appears to be black-pad and is often the result of using specs that call for gold plating that is too thick. The black pad is corrosion that is created between the gold and electroless nickel during the gold plating process. This is counter in
Electronics Forum | Thu May 12 13:09:58 EDT 2011 | tombstonesmt
This is just an example of what we do at our facility. We record cycle times of the "cells" the operators work in, they are divided into load time, robot time, tester, and packout. Generally I let the operator complete the process about five or more
Electronics Forum | Tue Nov 01 20:40:03 EDT 2011 | mikeincal
What may be happening is an early trigger of your vacuum sensors during production due to a clogged tip or vacuum line in the head. What happens during production is that the Y axis gets into position, and then the vacuum sensor input is monitored on
Electronics Forum | Thu Nov 03 10:11:20 EDT 2011 | remullis
I am being asked by management to setup one piece flow through every operation. We have SMT,DIP,RAD,AX,MANU,WAVE, Quite a bit of hand soldering, Post Inspection, AOI,CLEANING,BARCODING then out the door. We have rougly 60 different products with most
Electronics Forum | Fri Nov 25 15:52:40 EST 2011 | davef
"IPC-2221 - Generic Standard On Printed Board Design" talks to fiducials. Anther take on fiducials says they shall meet the following requirements. * Make fiducials 1 - 1.5 mm diameter circle. * Cover fiducials with tin. * Keep solder mask opening at
Electronics Forum | Thu Aug 09 07:53:16 EDT 2012 | davef
Allowable bow & twist: Together, both IPC-A-600G and IPC-6012B represent the core IPC documents for describing the acceptable and nonconforming conditions that are either externally or internally visible on finished printed boards. IPC-A-600G relies
Electronics Forum | Thu Sep 12 20:17:59 EDT 2013 | action_101
Good ole contact cs-400. I worked at two different companies that had these machines, all I believe were E's except 1 C. One place had one and the other place had 4 of them. Dont take this personally, but thank god my current employer doesn't have a
