Electronics Forum | Wed Mar 30 15:16:35 EST 2005 | Rashid
Hi, I've measured a rework profile on a summit 750. my nearby parts are heating up as high as 178 to 182 degrees C. I'm concerned that this fine pitch parts that are nearby are affected specially their solder joints going to close to melting point.
Electronics Forum | Tue Apr 05 12:01:17 EDT 2005 | blueflag
Thanks for reply we have found a blown fuse on the back plane for the mot-z pcb . But we now have problems with Z height, i am trying to auto-teach devices from the tray wagon (qfp etc) and it is not always lowering the nozzle to the component. i ha
Electronics Forum | Tue Apr 05 08:18:39 EDT 2005 | Rob
Hi, I don't know if I'm being naive, but I'm seeing a number of 3 zone (+1 cooling) ovens on the market that claim to be for Lead Free soldering. Trying to follow component & solder manufacturers ideal profile can be tricky with 7 zones at times so
Electronics Forum | Fri Apr 08 05:10:10 EDT 2005 | siverts
What is Your customers requirements? Is the PCBA mounted with front/back connectors? Will the PCBA be mounded in a rack and connected to opposite connectors on the other side? In this case, if the warpage is more than approx 1-1.5 % You will then n
Electronics Forum | Tue Apr 19 05:42:13 EDT 2005 | woodglass
There's two sensors at the rear of the XY table. Make sure that these are functioning correctly. You can view their states in the I/O map. The solenoid which actuates the table base up/down air cylinder is also at the rear of the table, to the left o
Electronics Forum | Thu Apr 28 11:14:27 EDT 2005 | bbarr
If you apply the RTV after coating, what happens to bond strength since you are now bonding to the coating and not the board? Will the caps still survive vibration and shock? I specify applying RTV before coating for this reason. Am I correct? I als
Electronics Forum | Sat Apr 23 19:31:25 EDT 2005 | molosse21
Hi, Is there a solder paste alloy espacially done to solder components on a pcb gold plated ??? I am using the AIM 297DX SN63/PB37 no clean and i had a comments from my customer telling me that i am not using the right alloy. Personally i never he
Electronics Forum | Sun Jun 12 15:45:12 EDT 2005 | Olof
Hi, We have just recently ordered a pre-heater for repair. Our concerns is: What temperature shuld we working with? I reckon that it shuld/must be between 80-100 degr. Celcuis? And also; How are we dealing with the MS-level (RoHS compliant) componen
Electronics Forum | Wed Apr 27 10:47:26 EDT 2005 | HOSS
A 1:1 pad to ball diameter will cause the balls to collapse more giving you less post solder component standoff. Depending on the application of this product and required reliability, you may want to stay with the padstack being used. You may try c
Electronics Forum | Mon May 02 10:18:30 EDT 2005 | Frank
Juki KE-2050R (or any of their R-series machines). They have the ability to automatically learn pick positions on paper tape feeders and they can zoom in on pick locations (x2 or x4), so this will help when they release their nozzle for 01005 compon
