Full Site - : microphones (Page 9 of 10)

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Sat Oct 07 12:52:11 EDT 2023 | ttheis

I don't know why you would NOT use a no clean paste. You're just adding time and cost to the assemblies, not to mention potential problems. Changing paste is the best option here unless you have a very compelling reason not to.

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Mon Oct 09 21:22:10 EDT 2023 | emeto

You can try expensive wash pallet that protects the part in question, or you can solder with NC solder after all wash is done.

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Fri Nov 03 21:16:40 EDT 2023 | calebcsmt

Depending on the assemblies you're producing, I highly recommend 8.9HF from Indium for a low residue SAC305 alloy. We have been using this for years in our NC process and residues are very little, with appropriate stencil apertures and paste printing

Carbon Contamination

Electronics Forum | Mon Nov 06 12:43:35 EST 2023 | milas

Hi We are mounting an microphone device (SMT package) onto a PCB which has an ENIG finish and, observed some contamination on the underside of the device, post reflow. The SEM analysis shows that the contamination has a high level of Carbon. Where c

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Thu Oct 05 13:24:42 EDT 2023 | rgduval

So, a couple of things... First, you're asking about water washing a part, but, note that the manufacturer says to NOT ultrasonically clean their microphones. Those can be two different cleaning types...assembly shops using water wash may not be us

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Tue Oct 03 18:09:06 EDT 2023 | glasscake

Try a liquid latex masking material. Youll most likely have to cover the hole with kapton, really drench the thing in the liquid latex to prevent the ultrasonic from damaging it then bake it at 50-70c for about 2-4 hours. With no bake its usually a 2

Belt Tension Meter

Electronics Forum | Fri Jul 22 10:30:43 EDT 2005 | Frank

I haven't heard of a meter like that. Consult Fuji for a recommended supplier if it is so special. The meter from Gates has a very sensitive microphone, so you tap (or strum) the belt and the vibration is heard and converted to Hz. If you want to

Exsessive assembly cleaning

Electronics Forum | Fri Jun 09 09:52:03 EDT 2023 | tommy_magyar

I agree with Mainteneer on this. Depending on the active components, I would check the datasheets of them. Particular groups of components to pay attention to: microphones, microprocessors, transformers, relays, switches. Washing may be in some cases

Cleaning PCBs with a MEMS microphone on it

Electronics Forum | Thu Oct 12 21:45:21 EDT 2023 | daniel_stanphill

This is a very challenging situation indeed. Have you tried contacting the manufacturer of the component? I know of one time in the past we had a reflow issue and contacting the manufacturer actually proved insightful. I have seen claims using Diamon

Carbon Contamination

Electronics Forum | Tue Nov 07 12:07:10 EST 2023 | tommy_magyar

We are mounting an microphone device (SMT package) onto a PCB - how? Surface mount line or hand soldering? Contamination can only come from the solder paste, solder wire, flux, or burning the component/PCB assembly during hand soldering. Unless the


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