Electronics Forum | Wed Feb 09 16:09:06 EST 2000 | Doug
Does anyone have any ideas on setting up a parts library/database on an SMT line? We would like to identify a particular part by it's package style, instead of by the customer's part number, in order to reduce the amount of entries in the library.
Electronics Forum | Fri Feb 11 12:21:44 EST 2000 | Finepitch Services
Doug, What I've done in past was calling them as 1206T.5, 1206T1.0, SOIC16, RESNET16, SOIC16T5.0, ALCAP4, ALCAP5 etc. T means thickness but for the ALCAP case 4 means 4mm diameter. If you have the time and patience, having a board and attaching a s
Electronics Forum | Wed Dec 13 11:11:20 EST 2000 | CAL
CONFUSED???? The the "BIG-chip-in-the-middle" on my image is IC732. IC304 is the 52pin QFP to the right of the "BIG-chip-in-the-middle".If it worked when the "Thingy" was there and does not work when the "thingy" is not there good indications are you
Electronics Forum | Tue Nov 14 09:43:10 EST 2000 | jason
Hi, I have a question about charging up batteries. I have two batteries in series, they are NiMH PCB mounted rechargable batteries that are used for battery backups etc. I want to be able to recharge these batteries, so I wont have to buy new ones
Electronics Forum | Fri Sep 15 16:37:49 EDT 2000 | Dave F
Sounds like someone aimin� fo tha big hurt, if ya axes me. Two spots to place your lawn darts are: 1 J Hwang in "Modern Solder Technology � " states (p.354) that " � extreme CTE mismatch between silicon IC (~2) and the PCB (~16), solder connections
Electronics Forum | Tue Sep 12 11:55:30 EDT 2000 | Mike F
In general I agree with Dave and Chris, but some parts have leads that can't be clinched (connectors, some header sticks, etc.). If the problem part has not been a floater in the past, then check the lead finish and your flux application. A bad finis
Electronics Forum | Wed Aug 09 22:00:44 EDT 2000 | Dave F
Hey Charles!!! Where in earthly heaven did you get a TO263 with "large solderable tab (approx 8mm square) on the back and 5 leads"? All the TO263s that�ve reached-up and smacked me have been "TO220s" with a modified tab and three leads that are f
Electronics Forum | Thu Aug 10 12:14:12 EDT 2000 | Charles
It looks like a giant dpak device but with 5 leads. The problem is that on approx 3% of our boards one more pins are open circuit. It appears that the pins are not in contact with the pads. Board is HASL finish IR oven Paste Koki 953i. If you have a
Electronics Forum | Mon Aug 07 18:20:40 EDT 2000 | Darby
James, I only use the clamshells for fine pitch if my other printers are non operational. Not reccommended but achievable in an emergency. In answer to your questions. We use two clam shell printers and two vertical lift printers. All are used for 8
Electronics Forum | Mon Jun 12 22:02:48 EDT 2000 | Dave F
Jason: Wave soldering is the coolest thing!!!! First, so, what�s the chemical analysis of this white res? Can you point us to either tin, rosin, or something else? Second, how do you know that you are making these white residues? Could your boar
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