Electronics Forum | Tue May 02 11:50:53 EDT 2006 | Rob
Good point Grant, but also to be fair some of our USA suppliers have also been very good in the Leadfree change over - Kemet, Microchip, Lattice, & Diodes Inc to name a few, whereas a the attitude of a couple of our European suppliers have left a lot
Electronics Forum | Mon Jul 10 08:24:32 EDT 2006 | dougs
Hi Rob, Thats the thing, there seem to be no datasheets available, only catalogue pages on the distributers website. PBT is not listed on these pages. I'm thinking about takin g the other suggestion and running a couple of samples through the o
Electronics Forum | Wed Jul 26 08:14:07 EDT 2006 | mmjm_1099
This is for all boards not just our immersion silver PCBS. We went out bought a shrink wrap and anytime they get open the stock people have to rewrap them. We had to do this in order to get a couple new customers a couple years ago and now its just a
Electronics Forum | Thu May 03 09:02:31 EDT 2007 | realchunks
Hi LC, Where are you getting your profile from? Are you actually attaching t-couples to the board? For BGAs the best place to measure is from the center of the device. This means drilling a hole in the board and placing the t-couple thru the hole
Electronics Forum | Tue Oct 04 15:26:52 EDT 2011 | gregcr
Hi All, I have a couple Simplimatic Shuttlegates that I belive need the program reloaded. These use the old Seiberco motor controllers. I have a couple known good Seiberco controllers, but I belive they require a program to be loaded. If anyone k
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 | Tue May 21 09:06:03 EDT 2013 | hussman
Delta-T in reflow generally means 2 things - difference in temperature on a product or difference in temperature of your oven. Delta-T on a product is what are your hottest and coolest areas on the board. Larger parts toward the middle of the boar
Electronics Forum | Thu Aug 30 14:14:27 EDT 2001 | dougt
James Take a board with double sided tape and run it with all the other parts "shorted". Make sure that the part is being placed by the head/spindle that will be used during a full run. Inspect the part after it is placed and carefully remove it a
Electronics Forum | Mon Mar 20 09:08:42 EST 2006 | mapell
AR Sounds like dirty chains... couple ways to check... Pull off the drive chain for the conveyor. Place a wrench on the (unload end) drive shaft and spin, if it is a bit tough.. dirty rails. Also look at load end of chains. The chain goes low and w
Electronics Forum | Thu Dec 21 10:27:24 EST 2006 | realchunks
>>> Now you must take into account your total board mass as well. If you have tons of heat sinks, or parts on the other side that can affect your profile, you should have them on the board when profiling. That�s where the "engineering" part in all
