Electronics Forum | Wed Mar 27 20:53:23 EST 2002 | djarvis
rotation reset. That engineers actually do this just proves to me what a mischievious bunch of "little minxes" they really are. What I do is pick a package and >select>same pattern>same rotation. Go through 0,180,-90,90 and check for each pattern. Th
Electronics Forum | Wed Dec 13 11:15:20 EST 2000 | Travis Slaughter
I�m not sure but it looks like the �mini-chip thingie� is a filter cap if so it should not stop the playstation from working, may not work like you like but should do something. Did you use any static protection? If not you may have fried one or all
Electronics Forum | Wed Dec 13 12:08:57 EST 2000 | Stefan Witte
Apparently the adhesive tape peels off from the joint, which could have some reasons. 1. There should be an overlap of the cover tape, as Cal mentioned. The new cover tape laying over the old by approx. 2mm. I also peel the cover tape a bit off, whi
Electronics Forum | Tue Dec 12 03:15:13 EST 2000 | Chris May
The profile that you should be using, hopefully, is detailed in the paste data sheet. Connect your thermocouples to various parts of the board, depending on layout, population etc; and then run some trials observing the profile on your oven monitor/
Electronics Forum | Wed Dec 13 19:40:38 EST 2000 | Jerry Wetzel, SME, EM/SME
Your profile must be precise, your stencil aperture sizes and shapes are very important, and the size of the pads on the boards should be very close to what the part manufacturer recommends. We had some trouble with hi-temp paste, and discovered tha
Electronics Forum | Mon Dec 11 03:46:14 EST 2000 | JohnW
I have to say I've never heard of anything tombstoning over wave, I've seen issues where the glue dot is too high or off to one side creating a poorly seated component that has too big a gap between pad and endcap(and hence an open), but never a tomb
Electronics Forum | Thu Dec 07 16:58:42 EST 2000 | NickMata
You're correct, it does not matter on dual dots because they should be the same size. My concern is given that the FUJI will not see dual dots as a single item, in order to verify both dots I would have to program as them as seperate fids in which ca
Electronics Forum | Fri Dec 01 16:02:33 EST 2000 | Jim M
Thanks for your reply. I 've tried to clarify and answer your questions. The water soluble paste used is WS3060, type 4. The boards are sent through a inline di cleaner after reflow. There is a hot Di waterwash, rinse and then hot air to dry the wa
Electronics Forum | Mon Dec 04 11:14:03 EST 2000 | JimH
All, For what it's worth the only time I have experienced this phenom was when board support pins were misplaced on our chip shooter and these components (previously placed) were resting on the pins and cracking when we populated the other side o
Electronics Forum | Fri Dec 08 23:02:24 EST 2000 | LeeKibler
Beware the foam fluxer. I had a problem with cracked caps that just about drove me off the deep end. I discovered that my foam fluxer air knife was not turned on resulting in excessive flux. The excessive flux (VOC free) was not properly dried off
