Electronics Forum | Tue Dec 16 15:43:50 EST 2003 | patrickbruneel
Kev, I looked up records of various hollis machines with 3 preheat zones. and with progressive preheat temp. of 300 400 and 500 with a speed of 3.5ft/min the topside board temp was 120C before entering the wave. the preheat elements were infrared. W
Electronics Forum | Wed Dec 17 08:49:04 EST 2003 | patrickbruneel
Kev, It looks like you have a preheating powerplant and you still only get the board up to 85 Deg. This indicates that the preheating is out of calibration or the range settings might be very wide (Fex the preheat elements shut down at 500 and go ba
Electronics Forum | Thu Sep 25 17:35:28 EDT 2003 | denis
To be precise, the component is a Xilinx Virtex platform FPGA with 1152 balls. We also assemble some DSPs up to 1000 balls with metal cover. At best, we can remove the components but it is almost impossible to find a working solder profile using IR.
Electronics Forum | Sun Jun 10 12:30:10 EDT 2001 | procon
Is this a Convection Oven or IR? If convection, you can increase the air velocity in the zones if the oven has this ability. You should do as Dave has explained. If you must use pallets when reflowing your components, you need to profile in the same
Electronics Forum | Fri Apr 29 15:14:52 EDT 2022 | glasscake
second the kapton tape. Another tape we use alot of is powder coat tape (a tan color) because it has excellent heat resistance and a good adhesive that does not leave residue.
Electronics Forum | Wed Sep 24 12:30:20 EDT 2003 | cyber_wolf
Can anyone give a good manufacturer of hand held vacuum pick up tools? I have tried most of the common ones out there.(Vampire,Pen Vac,Selecta)They seem to work OK, but they still lose vacuum and drop parts after a couple seconds. We just got in a ne
Electronics Forum | Mon May 02 12:03:17 EDT 2016 | dekhead
Many different units used over the years; AC (just cooling); TCU (heating and cooling) and ECU (temperature and humidity)... Let me know exactly what you've got, I'll see what I can offer for manual. www.dekhead.com
Electronics Forum | Thu Dec 11 12:17:16 EST 2008 | bmaheu
Setting up a PCB washing "system" and the facilities required for a cost effective and repeatable cleaning process depend heavily on the application (water soluble versus chemistry cleaning), (batch cleaner versus ln-line) and local factors (quality
Electronics Forum | Mon Jan 13 21:52:16 EST 2003 | davef
Haaaaaa!!!! You contractors get all the fun don't ya??? Consider: * Replacing the balls on the corners of the devices with balls composed of a "hard solder", yano something like 90/10. * Shimming to prevent excessive collapse of a heavy BGA during
Electronics Forum | Thu Jan 16 03:43:42 EST 2003 | johnw
1st off for the forum folk, I don't like the fact that the new system only let's you see the posting your replying too, I'd rather be able to see the thread..... Anyhoo, why this alloy?, it's because it's the device manufacturers preferred and the c
