Electronics Forum | Thu Jun 12 03:34:23 EDT 2003 | sanjeevc
I would like to ask a question about SMT reflow > process. I did 10 pcs samples but all is fail. > The sample is double faces to have components > (up-side has 4 pcs of BGA and down-side has 3 BGA > and 2 QFP). And I saw some of BGA which is > t
Electronics Forum | Wed Jun 25 18:17:48 EDT 2003 | Brian W.
Water soluble pastes generally work best with a ramp-to-spike reflow profile. Check your paste manufacturer's recommended profile. There are many factors that impact your profile; board thickness, component density, buried thermal masses, board si
Electronics Forum | Tue Jun 17 13:12:57 EDT 2003 | Jipp
We designed small PCBs (typically 2"x5")for our some of our products for quite some time now. We did not use PCB extensively and just hand-produced everything but... We now use them more and more and they got more sophisticated. we're heading for 20
Electronics Forum | Wed Jun 18 11:36:33 EDT 2003 | Quantass
I've gathered information about a number of flat panel display technologies such as OLED, cholesteric LCs, electronic ink/paper, ferroelectric, ZBD, etc but still dont feel that I have a thorough account of each nor a full listings of display technol
Electronics Forum | Wed Jun 18 18:27:21 EDT 2003 | samaniegocesar
Hi Mark Actually I'm a Operations Manager of UEMSA group, I'm an Electronic Engineer and I being doing and Designing some devices like your requirement( pneumatics machines, controllers, etc), I could Help you, I can Design the countdown timer, but
Electronics Forum | Wed Jun 18 19:16:56 EDT 2003 | GEJames
hello all - i am i need of a simple electronic counting device but i know little about electronics. would someone please describe to me the parts I'd need and the assembly process to create a computer that meets the following specs: 2 digital LED t
Electronics Forum | Thu Jun 19 14:14:28 EDT 2003 | samaniegocesar
Hello Mr. James Mark send a Email similar to your email about a countdown timer. I send him this email. Read and give me your comments.. I'm an Electronic Engineer and I being doing and Designing some devices like your requirement( pneumatics mac
Electronics Forum | Thu Jun 19 10:36:54 EDT 2003 | Jacob
Hi all I am having a reflow problem. Recently we started using a through hole connector with solder flux bearing technology on a densly populated board. The connector reflows at the same time as the smt components through reflow. The problem I am ha
Electronics Forum | Fri Jul 04 01:32:15 EDT 2003 | rheise
I've seen numerous incidences of mirror image cracking under endcaps in high dielectric material ceramic capacitors due to thermal cycling. If the cracking is deep enough to extent through the plates you can get breakdown and shorting. Section the ca
Electronics Forum | Mon Jul 07 11:45:45 EDT 2003 | lromero
Do you know what the maximum temperature rating is for the devices. But in my past experience you could be seeing the following. Excess thermal ramp rates typically you would like to see 2 to 3C/sec in the reflow oven, if it is greater than this i wo
winsouce.jpg)
