Electronics Forum | Tue Mar 06 14:10:52 EST 2001 | CAL
Are the voids in the balls of a BGA? Are you verifying this through x-ray if they are? some voids depending on size and location are some what accepted. Solder paste type? Solder paste date code? Humidity high? PCB's been stored in a truck trailer?
Electronics Forum | Thu Mar 01 16:58:05 EST 2001 | davef
Last time we looked at this, JEDEC carefully designated the dimensions of the carriers, but "neglected" to define the component orientation with the carrier. Go to http://www.jedec.org/download/, search for JEP95 JEDEC REGISTERED AND STANDARD OUTL
Electronics Forum | Sat Mar 03 09:38:13 EST 2001 | ghenning
http://global.ihs.com/industry_stds.cfm?customer_id=%21%25M%2AK%0A&shopping_cart_id=%26%258%5B%28J0%2CI%0A&country_code=CA〈_code=ENGL∨g_group=ELEC∨g_code=EIA
Electronics Forum | Sat Mar 03 21:00:36 EST 2001 | edmond
Panasert machine is known for programming ease. Both machines having U-axis indexing unit which may crash due to operator mishandling. Comparing the reliability and accuracy, the MPAV is more stable to MPA3F. MPAV using full vision for part regconiti
Electronics Forum | Mon Mar 05 04:25:09 EST 2001 | genglish
Hi, SMTnetters � Does anyone have any information on waffle trays, is there an IPC guideline for the use of these? I am experiencing a universal GSM dumping trays with parts still in the trays and I suspect the tray data will require amending if the
Electronics Forum | Mon Mar 05 23:10:56 EST 2001 | flynhi34
Hi, I always thought 45 deg squeegee blades were the way to go for solder printing. What are everyones opinions? Does anyone think that 45 deg blades will help prevent solder paste from sticking on the squeegee blades since equal amounts of paste
Electronics Forum | Thu Mar 08 01:19:16 EST 2001 | Mike Moninger
The environment essentially defines the need for coating. "Inside" may mean inside a men's locker room with attendant high humidity or inside a climate-controlled clean environment. Conformal coatings offer protection against moisture, fungus, chemi
Electronics Forum | Tue Mar 06 18:57:48 EST 2001 | pzohbon
I am looking at putting a laser or ink jet marking system for barcoding of pcb's in our smt production area. As and inline system it will need the capability to handle different size boards. We use dark green pcb's except for couple red and blues m
Electronics Forum | Wed Mar 07 02:29:22 EST 2001 | Cosine Theta
Barcode needs a light colour backgroup so that the scanner can read. No way you can mark on the solder mask and become readable. I found most of the time the investment cannot be paid back within 5 years. Most of the time it is product requirement th
Electronics Forum | Tue Mar 13 12:15:14 EST 2001 | onset
We have a 4C and it places 0402 components without any problems. The tricky part is getting the machine to pick them up out of the feeder it takes patience but you will get it. jake p.s. you
