Electronics Forum: pva and 650 (Page 1 of 3)

Conformal coating application

Electronics Forum | Mon Sep 27 20:40:05 EDT 2004 | danhui888

Hi, You may look into PVA 650 which cost around US$40K for a unit. Let me know which company you are or which location will you be and I shall get my team to visit you and let you know more about this sysytem. Regards Danny Hui

Bubbles in Conformal Coating

Electronics Forum | Thu Jan 22 09:04:22 EST 2009 | mefloump

Humiseal recommends a 1 to 1 mix ratio of 1B31 and Thinner 521. I have for that I need to thin my ratio more to get humiseal to spray correctly in our PVA650. Also I am using Humiseal 1B73 but the tech data sheets say the same for spraying. Try thinn

Masking tape

Electronics Forum | Thu Jan 22 08:51:07 EST 2009 | mefloump

We use green painters masking tape. Comes off easy and doesn't leave a residue. The blue colored masking tape works well also but tears too easily. Ours runs through and IR oven to cure the coating after it runs in our PVA650 and we have not seen and

Bubbles in conformal coat

Electronics Forum | Thu Sep 10 15:01:28 EDT 2009 | mefloump

I currently spray DOW 2620 with my PVA650 without any problems. I do not thin it but I do have a distance between the coating machine and IR oven to provide a flash off period. I notice bubbles only when the flash off time is too short and the coatin

PathMaster Program

Electronics Forum | Wed Oct 26 08:26:07 EDT 2011 | edmaya33

Anybody here with extensive knowledge with PVA650/2400SF coating robot? I wanted to know the semi perfect settings for my FCS-300 valves. Anybody can share their thoughts. Tank Pressure: Atomized Pressure: Path Speed: Path Distance: Height: Valve op

Conveyors and bar code

Electronics Forum | Thu Aug 24 16:08:18 EDT 2006 | Frank R.

Thanks Bill and Dave for your help, Sorry Dave if I didn't search for information in archives. After wave process we have 2 ICT, 2 AOI machines 4 PVA conformal coating machine that will be use on 3 different lines. The quind of automation I want to

warp and twist

Electronics Forum | Tue Feb 14 09:10:43 EST 2017 | davef

Assuming the traces run parallel and perpendicular to each other, I'd choose one direction the traces run as "x" and the other direction for "y." Then I'd pick a unique identifier on the board to insure proper orientation. Next, I'd measure warp and

Pick and place labels

Electronics Forum | Thu Sep 23 11:50:54 EDT 2004 | JB

We are using a standard nozzle Once placed, the label is not flat, the ends of the label are slightly lifted on both ends. The label is .650 x .200 Have you guys run into a similar problem?

Conformal Coating

Electronics Forum | Tue Nov 01 09:16:03 EDT 2011 | austinpeterman

Hello, Looking for a solution to silicon conformal coating wicking up into connectors. We build IPC-A-610 class 2. We are using a PVA 650 with Dow Corning 1-2577 conformal coating. We have solder joints that must be coated 1.25mm from the connecto

Bow and twist of PCB's

Electronics Forum | Fri Apr 20 13:55:09 EDT 2001 | kawiederhold

Hey Dougie, If you go to IPC.ORG and click on the on-line resources and databases, then on the "free downloads" link, the second or third document "for free" is the IPC-TM-650 in its entirety. It does discuss the test you are looking for! Have fun

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