Electronics Forum: back (Page 327 of 420)

Re: FR4 vs Ceramic mismatch

Electronics Forum | Wed May 06 09:16:51 EDT 1998 | justin medernach

| I hear that there is a problem with using ceramic parts that are sizeable. Apparently, there is a mismatch in the Temperature Coefficient of Expansion between the FR4 and ceramic materials which causes the soldered erminations to weaken and eventua

Re: FR4 vs Ceramic mismatch

Electronics Forum | Fri May 15 09:07:12 EDT 1998 | Earl Moon

| | I hear that there is a problem with using ceramic parts that are sizeable. Apparently, there is a mismatch in the Temperature Coefficient of Expansion between the FR4 and ceramic materials which causes the soldered erminations to weaken and event

Re: Universal 4713D Adhesive Dispenser Disposal

Electronics Forum | Tue Apr 28 23:48:20 EDT 1998 | Jojo

| I'd like to find a buyer for the following used equipment: | Make: Universal Instruments | Model: 4713D Adhesive Dispenser | Options: Rotatable dual-dot head (0deg, 90deg) | Price: Asking $4K (No reasonable offer refused) | I should note

Re: DI Filration And Bacteria

Electronics Forum | Mon Apr 27 08:19:28 EDT 1998 | Scott Davies

We dump our water. We only run the wash machine a total of three hours a day so there's not a ton of waste there. Our cation, annion, and mixed-bed tanks are leased. Consequently, they must be sent back for what the vendors call "regeneration," whe

Re: "No sale no service" accepted?/ or a dumb idea

Electronics Forum | Sat Apr 25 23:19:15 EDT 1998 | Jon Medernach

As an equipment vendor I can understand why some companys may choose not to deal with this type of equipment, I DO NOT AGREE WITH IT, but I understand it: stupidity, greed. As an OEM the cost of warranty and install is included in the sale price, if

Re: About SMT equipment

Electronics Forum | Wed Apr 22 22:24:15 EDT 1998 | Steve Gregory

| I need information about SMT machines, technology and mannufactures. If possible give me e-mail or web site's adresses Good Day Igor!! I could give you my opinions about different machines that I've worked with, but that would just be MY opini

Re: Selective Wave Soldering

Electronics Forum | Tue Apr 07 10:01:04 EDT 1998 | Steve A

| Good Morning everyone. Per repeated suggestions I have been reading back issues of SMT and Circuits Assembly magazines. I have just read an article concerning selective wave soldering which I understand is to be used when active SMTcomponents are

Re: Selective Wave Soldering

Electronics Forum | Tue Jan 12 17:46:26 EST 1999 | Tom Gervascio

| | Good Morning everyone. Per repeated suggestions I have been reading back issues of SMT and Circuits Assembly magazines. I have just read an article concerning selective wave soldering which I understand is to be used when active SMTcomponents a

Re: Solderability of fired-silver/platinum/palladium lead terminations

Electronics Forum | Thu Apr 02 08:26:36 EST 1998 | Steve Gregory

| Yes, norm it is. Look back to February 98 :discussion on this issue. Norm, That discussion does deal with palladium coated leads, but when I read your statement about silver/palladium fired terminations, I'm assuming that you're referring to

Re: Micro Vias in Pads

Electronics Forum | Wed Mar 25 16:38:21 EST 1998 | Steve Joy

We have successfully put .016" vias in .030" pads. There is no issue with .030" solder balls, since the actual volume of the .002" via in pad is small compared to the ball+solder paste volume. We did notice random bubbles where, apparently, the sol


back searches for Companies, Equipment, Machines, Suppliers & Information