Electronics Forum: doe profile (Page 37 of 64)

Screen Printing for BGA

Electronics Forum | Wed Aug 27 14:41:49 EDT 2003 | Stephen

Have you checked the temperature profile at the balls? Just because a recipe works "fine most of the time" does not mean it is optimum. Do you have a machine that can measure co-planarity? If I get time I plan on using the MPA to look at co-plana

Re: BGA repair/rework

Electronics Forum | Mon Mar 08 20:17:41 EST 1999 | Michael Larsen

| | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | Concerning the BGA stuff, I'm getting about 60% success using

Re: BGA rework : IR or convection

Electronics Forum | Wed May 19 10:48:40 EDT 1999 | Glenn Robertson

| | | We are currently looking at purchasing some BGA rework equipment. Could someone give us the pro's and cons of IR heating (top/bottom)vs. hot air convection ? | | | All other tips are also welcome. | | | | | | Thanks | | | | | Philip, | | I ha

Re: hybrid solder joints

Electronics Forum | Fri May 14 00:28:09 EDT 1999 | Mike D.

| I am seeing reflow around my signal pins after being subjected | to a profile of 204c for 1 minute and 225c for a min of 30 seconds. Signal pins are soldered into a copper plated alum. case with SB5 and then silver plated. The pins have a hot oil

Re: white dirty solder

Electronics Forum | Thu Jan 15 15:13:50 EST 1998 | justin medernach

| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct

SMT process Blowhole/ Pinhole

Electronics Forum | Sat Mar 29 08:38:28 EST 2003 | davef

Iman When you talk about your profile, can we assume you're measuring it on the pads of LGA? Profile the solder paste reflow by placing a thermal couple under the component pad, similar to a BGA. On a slight tangent, as with soldering BGA, paste

REG: BGA REWORK STATION ( BEST EQUIPMENT)

Electronics Forum | Fri Apr 20 14:02:26 EDT 2007 | JJ

RA, First, define "medium scale budget". Aside from that, I have used many systems, listed in my order of preference: 1. SRT1100 - superior board support - very reliable 2. ERSA IR550A - unique flexability due to infrared heaters 3. Metcal APR5000 -

Re: opinion of these rework stations

Electronics Forum | Tue Sep 28 08:27:55 EDT 1999 | Earl Moon

| if anyone has used or has one of these bga rework stations please give me your opinion on them. I am planning on using the sytem for not only rework but also low volume prototype production for hand built 1 or 2 qty pcb's, so ease of use is impor

Re: BGA repair/rework

Electronics Forum | Sat Mar 06 12:33:21 EST 1999 | Dean

| | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | Concerning the BGA stuff, I'm getting about 60% success using

Re: Wave Rider

Electronics Forum | Mon Jan 04 11:32:59 EST 1999 | Chrys

| Anyone have any experience with ECD's Waverider/MOLE profiling equipment? If so, were they positive experiences? | I use ECD's mole for profiling in the wave and a KIC for profiling in reflow. I like the KIC a whole lot better for a couple of re


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