Electronics Forum: like (Page 311 of 1214)

Profiling LQFP-144 with ground plane

Electronics Forum | Thu Feb 24 15:36:34 EST 2022 | dontfeedphils

Looks like a decent profile. Only recommendation I have would be to possibly try and high-temp solder the thermocouples rather than the aluminum tape/kapton, only because you can get air-gaps and inaccurate readings using the tape method on assemble

Profiling LQFP-144 with ground plane

Electronics Forum | Thu Feb 24 20:13:22 EST 2022 | dwl

They don't look that bad, especially for SN100. There is evidence of wetting on the toe and the paste on the pad seems to have reflowed properly. What does the heal look like? That's the more critical part of the solder joint for Gull leaded parts.

Profiling LQFP-144 with ground plane

Electronics Forum | Thu Feb 24 20:39:05 EST 2022 | joshsvoboda

there is evidence of wetting on the heel. This is the first time I have had this type of joint using SC100C on a leaded part. Usually there is at least some wetting on the sides instead of just looking like it is pressed in and sitting on top of the

FR4

Electronics Forum | Sat Feb 26 19:58:34 EST 2022 | shobanraj95

Hi, how to automate FR4 sticking one a small section of flex circuit? Currently, we're sticking one by one manually. I need some ideas to improvise, like, loading in 1 flex circuit, then the machine sticks Fr4 onto the flex. Any suggestions please.

Is there a Selective Soldering board design IPC standard?

Electronics Forum | Tue Mar 01 16:36:43 EST 2022 | joshsvoboda

We are fairly new to selective soldering. I would like to find out if there is an IPC PCB design standard to allow for selective soldering.

Heller Reflow Oven

Electronics Forum | Mon Mar 14 09:16:50 EDT 2022 | paddymanoj

I am planning to purchase a Heller Reflow Oven. It is a Sept 1996 make, Model # 1088. It is in good working condition. Would like to know if spares would be available for this old model machine? Also, what would be a fair price for this machine?

Wave Solder Machine

Electronics Forum | Mon Mar 14 09:20:31 EDT 2022 | paddymanoj

I am planning to purchase an old Wave Solder Machine that is in good working condition. The make and model is EWS-310SLF-10121357. Would like to know if spares would be available for this machine? What would be the fair price for this old machine?

MY12 Dual Vision Camera Calibration issues

Electronics Forum | Thu Mar 17 18:20:17 EDT 2022 | SMTA-64387687

It sounds like a mechanical issue. Otherwise, you'd lose other calibration. Try backing up the parameters. Then, when the camera is out of calibration, restore the parameter and see if that fixes the problem.

DEK 265 GSX missprint

Electronics Forum | Tue Mar 22 16:12:30 EDT 2022 | dekhead

Most likely corrupted vision calibration. Reload backup calibration from floppy (of available), rerun calibration ("Calibrate Vision")

Convection Oven Reflow Profiling

Electronics Forum | Thu Mar 24 11:30:08 EDT 2022 | stephendo

Datapaq It looks like they are now part of Fluke instruments. They cover a lot of industries but at least used to have suitable software for us. It has been a while since I used one so ymmv.


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