Electronics Forum: cfm (Page 7297 of 7896)

Re: Need help on DFM rules

Electronics Forum | Tue Jun 01 15:35:03 EDT 1999 | Earl Moon

| Hi, | | To improve the Design For Manufacturing I am currently looking to write down some design rules that can (and should be) used by our engineering department. | | Can somebody help me get started or give some usefull tips on where to find a

Re: IP1 for Placement of BGA's?

Electronics Forum | Sat May 29 22:20:56 EDT 1999 | Earl Moon

| | Is it possible to place parts that do not have leadframes exposed when looking from the top side of the part such as BGA's using a Fuji IP1 with a SMD1 vision (Binary) system. I realize that the IP1 does not have front lighting but according to a

Re: Frameless stencils

Electronics Forum | Sat May 29 22:10:28 EDT 1999 | Earl Moon

| We are looking into frameless stencil systems for screen printing. Outside frame size of 29x29. | | Pros: smaller storage requirements and cheaper stencils. | | Cons: sharp metal edges, additional change over time required | | Can anyone relay

Re: Tabletop pick and place equipment selection

Electronics Forum | Fri May 28 15:01:02 EDT 1999 | Tony

| Has anyone had experience with prototype-scale, table top Placemax and/or Manncorp pick and place equipment? If so, what has been your experience with the machines? Are they reliable? Did they meet all your needs? Which needs didn't they fill?

Re: Tabletop pick and place equipment selection

Electronics Forum | Fri May 28 16:03:10 EDT 1999 | Jeff Sanchez

| Has anyone had experience with prototype-scale, table top Placemax and/or Manncorp pick and place equipment? If so, what has been your experience with the machines? Are they reliable? Did they meet all your needs? Which needs didn't they fill?

Re: PWB marking

Electronics Forum | Thu May 27 14:44:05 EDT 1999 | Deon Nungaray

| One of our board fab houses is asking (again) to eliminate the reference designators and polarity markings from boards. This isn't feasible for thru-hole, but what is the industry trend on surface mount assemblies? | Deon Response: Hi Greg, Fr

Re: Need Wave Solder Help (SMT)

Electronics Forum | Wed May 26 13:30:58 EDT 1999 | JohnW

| we have just started wave soldering passive SMT components and through hole. We are having trouble with voids on the SMT components. It is very random, but effects a lot of TSOT's. We are using an electrovert with a chip wave. Are there any obv

Re: Need Wave Solder Help (SMT)

Electronics Forum | Wed May 26 14:24:13 EDT 1999 | Boca

| | we have just started wave soldering passive SMT components and through hole. We are having trouble with voids on the SMT components. It is very random, but effects a lot of TSOT's. We are using an electrovert with a chip wave. Are there any o

Re: Cleaning Stencils

Electronics Forum | Tue May 25 11:40:23 EDT 1999 | Steve Gregory

Just a note about cleaning stencils with a mixture of alcohol and water, especially if you're using no clean paste, it's really not recommended. Don't take my word for it, you can check with Alpha or most any other solderpaste vendor. What will actu

Re: Heatsinks for surface mount devices - adhesive alternative!

Electronics Forum | Mon May 24 17:17:21 EDT 1999 | JohnW

| | Can anyone steer me towards a supplier of heatsinks suitable for use on a PQFP 160. Before you shoot me down in flames, I know that I am not going to get much heat away from the die because of the plastic but the application is such that the boar


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