Electronics Forum | Mon Sep 23 11:13:12 EDT 2019 | tsauve
I forgot to update this. Customer insisted on reflowing SIM card directly to PCB, as per their previous CEM. It worked. No deformation of the SIM card - assembly works - records data to SIM card. Note that using hot air reflow type (rework station)d
Electronics Forum | Mon Mar 04 17:47:44 EST 2019 | slthomas
The lowest peak temp. I've had the pleasure of working with is 240°C +/- 5°C. I can't imagine a manufacturer going much below that and still saying it's lead-free compatible. It would be interesting to know just how much TAL plays into the affect
Electronics Forum | Fri Mar 29 00:18:05 EDT 2019 | SMTA-Vikram
3% NDF. We using 8oz 90 degree blade type razor probes, still same issue. Is there stencil we can use or selective pasting test via so flux will not build in testvia. any help or guidance will be appreciate.
Electronics Forum | Fri Apr 12 18:10:57 EDT 2019 | davef
Here's what we've done in the past. Depending on how it's configured, conveyors can run either forward or backward, but only in one direction at a time. The voltage polarity through the starter of the drive motor configures the direction. So, swappin
Electronics Forum | Tue May 07 12:50:17 EDT 2019 | sankarseptember
Thanks for the response Thomas..You are correct I got solder paste on both edge on the nozzle type 4007. But it uses for nearly 30 types of part number ..and also I will get missing without any issues in nozzle..I am unable to find the trace in that.
Electronics Forum | Thu Jun 06 14:59:47 EDT 2019 | cristian_amlima
Awhile back I faced a few problems because of that. To solve the problem, my only concern was about the peak temperature to assure that the alloy got melted. Peak temperature between 230°C and 235°C can assure that and usually is inside the sodler pa
Electronics Forum | Thu Jun 06 15:18:56 EDT 2019 | gregoryyork
Honestly, If I ever have an SMT problem it's when a profile is at 230-235C. We encourage minimum 240C and typically 245-250C. Many components call for 260C. Some Paste manufacturers advocated 230C in the early years of Lead Free and it was a disaster
Electronics Forum | Fri Jun 07 09:39:06 EDT 2019 | cristian_amlima
I totally agree with you when whe talk about a lead-free process. In my early comment I thought we were talking about a tin-lead process with the pcb pb-free, when the solder paste limits should be respected. That is the motive the temperatures I sa
Electronics Forum | Mon May 13 08:31:48 EDT 2019 | robl
Do you have in line 3D Solder Paste Inspection machines? If not the 2D inspection on the SP710 is very slow & not a patch on Hawkeye from DEK. If print time is not an issue then it doesn't matter. I have had both types of machine, and personally pre
Electronics Forum | Thu May 30 18:30:21 EDT 2019 | slthomas
Dave, if you single out "Simplematic" under used SMT equipment you get one where it looks like someone pasted an image of their product (with their URL, http://www.amikon.cn) on top of the actual paid advertiser's image. I didn't see amikon under the
