Electronics Forum: boarded (Page 1321 of 1642)

Solder mask

Electronics Forum | Fri Jan 02 16:52:16 EST 2009 | boardhouse

Hi, From a Manufactures choice - Green is the best due to it is the most commonly used mask color in the industry & cheapest. Kind a like Red paint for Barns. For US shops, most only have one LPI machine and to continually switch from Green to othe

Latent shorts on QFN package

Electronics Forum | Fri Mar 06 10:32:34 EST 2009 | fountain42

Yes, We've already experienced this same problem. 1) What kind of flux are you using? No Clean? Rosin? OA? 2) If it's OA, What kind of water wash do you do? Do you use DI water? How Hot? Who's machine? What are the pressures? 3) Have you performed a

IP2 placing parts shifted after servo fixed?

Electronics Forum | Fri May 01 00:27:12 EDT 2009 | rodrigo

Hi all, We had a servo amp replaced (SA-6) and the machine worked with no problem for the first panel (this panel of 10 only needs a TQFP100 from the MTU). Then I got the "Servo NG" error again. One of the servo paks showed a "7" on the LED. The err

Need low cost pick and place machine for limited production

Electronics Forum | Mon Aug 10 15:15:17 EDT 2009 | indity

I have very little knowledge of pick and place machines or assembly, and was hoping someone could give me some advice of where to start looking. I do learn quickly so I am not afraid of challenges or learning through mistakes. I need to produce abou

Need low cost pick and place machine for limited production

Electronics Forum | Tue Aug 18 22:22:43 EDT 2009 | comatose

Assuming you want to run 8 hours a day and 5 days a week, you need a sustained throughput of 2.5k components per hour. With fine pitch, futzing around, setup, etc you should really look for machines rated in the 4k to 5k per hour range. That's not sc

defects in pcb manufacturing

Electronics Forum | Tue Nov 03 20:00:47 EST 2009 | davef

Solder Mask Adhesion Pull Test Tape List IPC-TM-650 Test Method 2.4.28.1, Adhesion, Solder Resist (Mask), Tape Test Method, defines the procedure for determining the adhesion of solder resists (masks) used over melting metals, (such as solder plated

Researching placement machines - where do I start?!

Electronics Forum | Sun Nov 01 09:39:06 EST 2009 | jeffreyj

Interesting suggestions so far - keep 'em coming as I do a search on every one of them. Speaking of, it seems that if the humongous size of the older MyData machines isn't an obstacle then they seem to be a good choice for us... (to recap: we need t

Researching placement machines - where do I start?!

Electronics Forum | Mon Nov 09 15:58:09 EST 2009 | cellis

The biggest thing you will not get is the vision system like this. The 7722 has flying vision for most components and an upward looking vision camera for large components and BGA's. The older Quads had the Quad Align system which is laser vision.

Top camera inspection and side camera

Electronics Forum | Fri Apr 02 10:26:13 EDT 2010 | fishingfool

Manjunath The top camera will be used for probably 90-95% of your inspection needs. However, without side cameras that 5-10% of uninspected parts can be a real pain to manually verify. What you need to figure out is what is your product to inspe

solder question on crystal in DFN style package

Electronics Forum | Mon Apr 05 16:12:16 EDT 2010 | dyoungquist

We are installing via reflow soldering a crystal that has 2 pads, 1 each end. They are flat pads on the bottom of the part with a small area of the pad looping around and up the side of the crystal on the end. Inspection of the cyrstal under a 40X


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