Electronics Forum: amps (Page 7271 of 7890)

Re: pcb design for bga grounding.

Electronics Forum | Thu Aug 12 17:15:56 EDT 1999 | Jim Blankenhorn

| I am currently involved with designing a pcb which will use 225 pin bga,s | The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is | use the middle 6 or 7 rows of balls as the ground

Re: pcb design for bga grounding.

Electronics Forum | Fri Aug 13 04:12:41 EDT 1999 | ray hare

| | I am currently involved with designing a pcb which will use 225 pin bga,s | | The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is | | use the middle 6 or 7 rows of balls as the

Re: Srceen Printing control parameters

Electronics Forum | Thu Aug 12 22:31:10 EDT 1999 | Dave F

| Hello, | | Can any netters suggest what critical parameters should be considered & what are there assoicated impacts for a solder paste printing process ... | | B.Regards, | Felix | Felix: There are some 30 variables that affect SMT solder qua

Re: Reflow oven for solder side components??

Electronics Forum | Wed Aug 11 15:48:54 EDT 1999 | JohnW

| We are using a mixed technology process with mostly through-hole parts plus some SMT IC's on the component side and some passive SMT parts on the solder side. We do not have a proper wave soldering machine for doing solder side SMT (double wave or

Re: Reflow oven for solder side components??

Electronics Forum | Wed Aug 11 15:58:39 EDT 1999 | Doug Philbrick

| We are using a mixed technology process with mostly through-hole parts plus some SMT IC's on the component side and some passive SMT parts on the solder side. We do not have a proper wave soldering machine for doing solder side SMT (double wave or

Re: Reflow oven for solder side components??

Electronics Forum | Thu Aug 12 19:30:22 EDT 1999 | Kris Harris

| We are using a mixed technology process with mostly through-hole parts plus some SMT IC's on the component side and some passive SMT parts on the solder side. We do not have a proper wave soldering machine for doing solder side SMT (double wave or

Re: Reflow oven for solder side components??

Electronics Forum | Fri Aug 13 07:26:06 EDT 1999 | Brian Conner

| | We are using a mixed technology process with mostly through-hole parts plus some SMT IC's on the component side and some passive SMT parts on the solder side. We do not have a proper wave soldering machine for doing solder side SMT (double wave

Strange problem with my dispenser

Electronics Forum | Tue Aug 10 15:56:30 EDT 1999 | Jason Gregory

Has anyone ever heard of this? I have a Camalot System 5000 and we were in a pinch to produce some prototype boards. We needed Sn62Pb36Ag2-no clean in a dispensing mesh. All I could get my hands on was some Interflux paste in a jar. The formulation i

Re: Pick N Place UPS

Electronics Forum | Mon Aug 09 19:03:07 EDT 1999 | ScottM

| | Greetings, | | | | Would like to buy a 3 phase UPS for our Mydata TP11. | | Been looking and generally, sales person's point of view, 10KVA @ $10,000.00 is what they recommend. Seems a lot to me??? | | Called Mydata and suggested 2.2KVA per pha

Re: no clean rework

Electronics Forum | Tue Aug 10 07:47:12 EDT 1999 | Brian

| | | hello to everybody, | | | we have a really satisfactory no clean process, both smt/reflow and wave soldering, but we get troubles with defects rework; | | | does anybody know how to eliminate flux residues or how not to produce them during rew


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