Electronics Forum: recommendation (Page 327 of 392)

Re: Wave Soldering 14 and 16 Pin SOICs

Electronics Forum | Wed Mar 10 13:53:13 EST 1999 | Vincent Vega

| We will wave solder a board with SOIC14 and SOIC16 parts on the bottom. It has been difficult to find any specific wave solder process recommendations from manufacturers of the SOICs. The pad geometry utilizes theiving pads on both sides to reduce

Re: Pre-heat for Ceramic Capacitors

Electronics Forum | Sat Mar 06 08:01:45 EST 1999 | Scott Cook

| Can someone please advise me to the rework procedure for removal and replacing Ceramic Chip Capacitors (e.g. 0805, 1206, etc.)? | | Is it necessary to pre-heat ceramic capacitors before soldering them onto a PCB with a soldering iron? Is this just

Re: Squeegee Speed

Electronics Forum | Tue Feb 23 09:51:35 EST 1999 | Steve Schrader

| Hey all- | | My question is this: My stencil printer operator has said that he has to | wipe our 6-mil stencil each pass to get the paste in the 20-mill pitch | aperatures for a QFP to release well. We are using Amtech NC-559 type 3 | paste with

Re: Fiducials

Electronics Forum | Fri Feb 19 00:32:40 EST 1999 | ZEEK

| We are using .040" diameter fiducials (global and local) on our boards. They are solder covered and HASL. I get batches of boards where the p&p vision system has trouble reading the fiducial. The fiducial looks dark on the screen. The board ven

Re: Looking for MRP/MES software.

Electronics Forum | Wed Feb 10 00:07:15 EST 1999 | Jason

Gary, I am also evaluating MRP/ERP systems. I have had many demos. I have looked at SAP R3, and actually used it at a previous employer, very complex system and a bit pricey. SAP is at http://www.sap.com , others I have looked at are Acacia Tech

New SMTnet Site Changes

Electronics Forum | Fri Feb 05 11:34:44 EST 1999 | Clifford Peaslee @ SMTnet

SMTnet Site Changes This weekend SMTnet will get a facelift. We have redesigned some of our serviecs, and have added new ones. Some of the new features are SMTnet Email, New Database Driven PCBCE Mart, New Directory Database With Enhanced Searching a

New SMTnet Site Changes

Electronics Forum | Fri Feb 05 11:32:08 EST 1999 | Clifford Peaslee @ SMTnet

SMTnet Site Changes This weekend SMTnet will get a facelift. We have redesigned some of our serviecs, and have added new ones. Some of the new features are SMTnet Email, New Database Driven PCBCE Mart, New Directory Database With Enhanced Searching a

Re: Reliability of Reworked BGAs/CSPs

Electronics Forum | Wed Feb 03 22:37:50 EST 1999 | Dave F

| I'd like to find some technical papers on the reliability of reworked BGAs. If you know of any, please let me know. | | I have a concern about this because our current rework process does not apply solder paste to the pads prior to placing the pa

Re: Reliability of Reworked BGAs/CSPs

Electronics Forum | Thu Feb 04 15:44:04 EST 1999 | Michael Allen

Actually, solder paste adds about 12% to the joint volume for PBGAs, or about 31% for MicroBGAs -- assuming standard (recommended) pad sizes and stencil thicknesses, and paste with 90% metal content (50% metal by volume). | | I'd like to find some t

Re: Pace TF700, here's what it looks like...

Electronics Forum | Fri Feb 05 12:50:06 EST 1999 | Steve Gregory

| Love the picture. | | We are considering the PRC 1500. It combines a thermoflo unit with a MBT 250A which we currently use. Does anyone know the difference between the TF200 and the TF700? This is the first I have seen the TF700 mentioned. | |


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