PCB protective lacquer and SMDs?

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
A

AudioWizard

Member
Joined 2005
Hi all,

something I'm really wondering about, and for which I can't seem to get any definite answer.

Is that ok to use this green protective lacquer for PCBs on a PCB mounted with SMD parts? I mean, spraying it on the mounted PCB after having soldered everything. Can it do any damage to SMD parts?

Everyone always talks about spraying it on the solder side... but with SMDs, the solder side is also the component side...

So, what do you guys think? Any advice?

(Oh, and obviously: for home-made PCBs, which I'm talking about here, solder masks are out of the question, so I can't spray the PCB *before* soldering the parts. It does dissolve while heating it with the soldering iron, but it would make it hell to solder SMDs this way.)
 
Magura

Magura

Member
Joined 2003
class-a-labs.com
AudioWizard said:
H

(Oh, and obviously: for home-made PCBs, which I'm talking about here, solder masks are out of the question, so I can't spray the PCB *before* soldering the parts. It does dissolve while heating it with the soldering iron, but it would make it hell to solder SMDs this way.)
Click to expand...

DIY soldermask is not all that hard to make.

http://www.briangt.com/gallery/album05

http://www.diyaudio.com/forums/showthread.php?s=&threadid=57545

http://www.diyaudio.com/forums/showthread.php?s=&threadid=58229

Magura :)
 
A

AudioWizard

Member
Joined 2005
Stocker said:
Depending on the coating, I suppose it could wreak havoc on small capacitors and high value resistors... but I couldn't tell you more than that gut feeling.
Click to expand...

Well, I use KF coating spray. It's highly non-conductive and made just for PCBs... so I don't think this could give electrical problems.

I'm more concerned with how it could react with some components plastic shell in the long run...
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom