Electronics Forum | Mon Mar 09 15:53:05 EST 1998 | Tom Foley
| I am looking for component placer that can handle not only smc but also flip chip C4. | If there is any machine satisfying my request, please inform me. | machine name , spec, and so on. Take a close look at the Philips ACM. The ACM is engineere
Electronics Forum | Fri May 17 14:46:29 EDT 2002 | Claude_Couture
in both samples the water displacement is 1 cubic inch of water since the volume is the same. the first has a thickness of 1 inch, the second has a thickness of a few microns. if you know the volume and one of the lengh, width or thickness, you can c
Electronics Forum | Wed May 29 17:17:49 EDT 2002 | wilcoxito
As far as aperture dimensions go, I found a technical note written by Micron that recommends using "square apertures with sides equal in length to the diameter of the PCB pad. The corners of the square should also be slightly rounded, and the apertu
Electronics Forum | Tue Dec 10 19:30:49 EST 2002 | Vijay
Hi Dave, The peak temp on the leads is 216-218 Deg C and duration above MP (179 degC) is 55-60 sec. Alloy(solder paste) used 62 Sn,36 Pb 2Ag (Alpha WS 609 Ty 3 Water eash) This is a SMT connector wth Gulwing leads Gold plating on the PCB is 2-5 micr
Electronics Forum | Mon Nov 29 16:04:47 EST 2004 | Terrapin Station
They are actually diamond impregnated tips. The tip can be cleaned using a special jig. this will extend the life. these nozzles are from a machine platform dating back to 1997. The RSS can last for 1,000,000 cycles. SA and MA are similiar but requi
Electronics Forum | Wed Dec 22 10:18:52 EST 2004 | tonyfox
Our company laser re-ball's BGA down to 100 microns ball size. One of our OEM customers have asked us to function test there BGA on Mobile phone PCB's. Origionally we thought of a test sockets however the sockets interfere with other devices on the P
Electronics Forum | Mon Feb 21 17:56:44 EST 2005 | davef
You want approximately 5 particles minimum across the smallest aperture. So in the case of a 0.8mm device, we use .017" pads with a round 0.020" aperture on a 6 thou thick stencil foils. Here, 0.020" diameter equals 0.50mm. This gives us 0.50/5=10
Electronics Forum | Sun Feb 27 16:25:51 EST 2005 | jakin
Hello my name is Jason. And I to work in electronics. I have recently had the same inquires by costumers about solder height to. Are these well-known customers like hp or micron? Cause it sounds like it to me. Who do you deal with that makes these in
Electronics Forum | Fri Oct 14 17:08:36 EDT 2005 | Mika
What? That is easily done. With a 127 micron stencil thickness and apertures made for a QFP 0.5mm pitch... Remember from school of how You squeeze a media under a certain presure (like air), from a bigger diameter towards a smaller nozzle, You will i
Electronics Forum | Thu Oct 27 08:27:57 EDT 2005 | Adam
Hi We are trying to solder a a contact whose base material is stainless steel, this is then nickel striked with a gold plating of upto 3 microns. We are trying to hand solder this to a standard 1.6 FR4 PCB with a HASL finish. We are seeing problems
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