Electronics Forum | Tue Mar 07 13:21:03 EST 2000 | Tuan Bui
Hi John, Aerofeed,Inc. has the "Dry box" nitrogen cabinets. 215-257-1152 and they are in PA. I purchased one last year and it has been doing a wonderful job for our operations. I use it to store BGAs and micro BGAs after baking. To reduce the cost, I
Electronics Forum | Thu Mar 02 15:12:50 EST 2000 | Robert Hartmann
To restate my question of earlier, if I have a .020" sphere before reflow, and my pad opening in the dielectric is .017", is there a rule of thumb to calculate the height of the sphere after reflow? We are using 62Sn/36Pb/2Ag spheres. This should h
Electronics Forum | Thu Mar 02 07:38:58 EST 2000 | Roni Haviv
Hello, I had experienced this kind of problem; Because the Au film is very thin (flash gold..) it is sometimes porositive and the Ni barrier below get Oxidation. After reflow there seems to be good solder fillets (visualy perfect!) but the leads wit
Electronics Forum | Wed Mar 01 10:46:26 EST 2000 | Robert Hartmann
Kelvin, Thanks for the help. The actual opening size is .440 mm, but I think what you said makes sense. After discussing with the customer, it looks like it is the height which matters, more than the diameter. We have learned that the height of t
Electronics Forum | Fri Feb 18 16:08:35 EST 2000 | ScottK
John, As a supplier of squeegee blades, we ship them out in clear plastics tubes at the approximate length of the blade itself. The ends of the tube have simple slide-on end caps. After visiting many customers sites, I've found that most of them k
Electronics Forum | Fri Feb 11 08:51:45 EST 2000 | HMAL
Dear Masdi, Perhaps you should check again your screen print process. Small amounts of solder paste under stencil can cause your problems. This paste is from previous printed pcb. When printing next pcb this paste attachs to places that it doesn't
Electronics Forum | Sun Feb 13 19:57:59 EST 2000 | park kyung sam
hi. pascal your problem is mine. sorry. i have no experience about m/c for pihr. we use woman for stick pin ,sme connector after mounter. we also consider m/c just like you. what i want to let you know is that http://www.celtronix.com. bye
Electronics Forum | Mon Dec 11 15:12:20 EST 2000 | accuspec
we are using alphametals no clean 95sn/5ag CL775 paste. After reflow there are solder balls on the board. mainly are around the cap. We are using a conceptronic concept 60 air. There are 4 zones with 8 chambers. We are not sure what the profile
Electronics Forum | Thu Nov 30 21:45:44 EST 2000 | Dave F
It's unlikely that anyone other than the biggest of whooses would think of 0.031" a fine pitch. I prefer 0.025" on tape with solder plated copper leads make in a shape that bears-up well after being driven over by a Mack truck, yet is compliant enou
Electronics Forum | Wed Nov 29 20:32:08 EST 2000 | irwanm
I'm new in SMT and the company I'm working with has already purchased SMFL-3000 manual pick & place system with hot air and we don't have reflow oven. We are now starting design SMT board. My question is, how we reflow the solder? After all component
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