Electronics Forum | Wed Mar 14 02:04:40 EST 2001 | pjc
zam, each paste mfg. has different "stencil life" times. check w/ your paste mfg's specification for stencil life. also, temp and humidity inside the printer's chamber effects "stencil life" time. we keep ours around 20C @ 50% RH. higher temps and l
Electronics Forum | Fri Mar 16 18:32:06 EST 2001 | djarvis
Anyone using "Hitano" 0805 capacitors please check their values before running. I just got stung by parts labeled as 100nf when they were in fact 10nf. We found five out of fifteen reels in the smd room incorrect, who knows what stores will find. P/N
Electronics Forum | Thu Apr 05 13:08:03 EDT 2001 | Garth Fitzner
I have around eight Quad 100 feeders that are giving me some problems. I think they probably just need a good cleaning and perhaps some minor repairs. Quad Technical Support can't help me and suggested I post a message here. Is there anybody who co
Electronics Forum | Fri Apr 13 14:51:01 EDT 2001 | Mike R.
Some Selective wave solder jig designer milled down the jig in one depth which is based on the thickest part on the bottom side of the board. This will create problem on the warpage on the jig due to the heat coming from the wave soldering machine. I
Electronics Forum | Tue Apr 10 11:39:29 EDT 2001 | brownsj
One of the reasons for a grainy joint is the cooling of the joint after reflow. Check your reflow profile, not just the preheating and reflow section but also the cooling zones. It works the same way as molten rock. If it cools slowly you get pumice
Electronics Forum | Thu Apr 12 01:23:04 EDT 2001 | Eric C
Check the pad size. I had this issue before due to the pad size too wide. R&D had change the size of the pad and is solve the issue. Before the pad size change, I had rebuild another stencil with the pad opening close to the component size. It won't
Electronics Forum | Tue Apr 17 21:30:27 EDT 2001 | davef
The issue is on the table. Which is it? Are you ... * Loosing your gold plate when you remove the tape? [A tape test is a standard test for evaluating gold fingers. Check IPC-TM-650, test number wachacallit. Checkitaut.] OR * Putting tape o
Electronics Forum | Thu Jul 20 14:16:42 EDT 2000 | Bob Willis
Only used adhesives once and it was a disaster. I don�t rearly have much experience but the real problem is everyone wants to compare adhesive with solder and they will not give the same results. There is a good book on adhesive check out my book re
Electronics Forum | Mon May 07 22:29:52 EDT 2001 | davef
4 wire per sec ... you figure how many you need] Encapsulation ~$120K for a dispenser [10 sec per die ... you figure how many you need] plus a cure oven ~$100k Throw in a another ~$100k for marking and cleaning Check the September 2000 SMTnet New
Electronics Forum | Tue May 15 08:40:52 EDT 2001 | Stefan Witte
The viscosity is only consistent over a small temperature range. If your room temperature has changed by a few degrees, it can make all the difference. You may have to increase the settling time. We did not check the viscosity, but measured the con