Electronics Forum | Thu Jan 29 00:10:17 EST 2004 | Vinny
Hi Dave, Thanks for your reply. I have tried getting the design changed from the customer but they cannot provide thermal relief as this changes the RF performance and they cannot afford to do that. As for profile it does reach the reflow tempera
Electronics Forum | Thu Jan 29 06:58:40 EST 2004 | davef
Ramp / Soak: Tombstoning is occuring during reflow. You need to get more heat into the ground plane. Obviously a ramp aint gettin' it done. Further, without intending to disrespect your internal discussion, if a linear profile improved the situati
Electronics Forum | Tue Feb 10 15:13:06 EST 2004 | patthemack
Hey Vinny, Sorry I haven't looked at this for a while. 3 things to try: Tombstoning- The ground plane side is larger because the solder mask allows for a little slop at the board shop (clearance around a pad of a few mils). Since there is not a defi
Electronics Forum | Wed Nov 16 20:17:51 EST 2022 | cyber_wolf
For a number of years now, work has been proceeding in order to bring perfection to the crudely conceived idea of SMT that would not only supply inverse reactive current for use in unilateral phase detractors, but would also be capable of automatical
Electronics Forum | Fri Mar 04 08:10:32 EST 2022 | leductho
We are big manufacturing site in Vietnam. Our factory are producing some key Customers' products such as phones, smart speakers, Automotive, IOT devices. We are looking for new customers who need EMS, OEM, ODM services.
Electronics Forum | Tue Nov 07 07:56:33 EST 2023 | danlilie
I just want to figure out for what applications or end products big PCB's are used.
Electronics Forum | Tue Dec 05 09:46:50 EST 2006 | GS
I'd be shocked if Siemens was going away. They are a very big group in a very big company. Yes, but recently we have seen several big groups from a very big companies been sold out (ie. Dover and some of his kids, etc.) Asia-India are good referen
Electronics Forum | Fri Feb 13 16:48:15 EST 2004 | davef
Places to try are: * Most BIG-time manufacturers of SMT production equipment supply promotional vids to their potential customers. Consider contacting them. * BIG-time SMT training course givers may have suggestions. Contact: EMPF, Texas Engineeri
Electronics Forum | Mon Nov 04 17:34:40 EST 2002 | pjc
Yeah, there's a MELF nozzle. Check with Fuji or one of the many after-market guys, mostly Asian suppliers. Big reel, no big deal, unravel it and reload in 7" reels.
