Electronics Forum | Mon Jan 17 12:16:02 EST 2000 | Brian W.
My old company (CM) ran SMT to 50ppm including some very complex boards. We established the normalizer number by: #components + #solder joints. As was stated earlier, the ppm for any given product is the result of many factors. You may get differen
Electronics Forum | Wed Dec 22 12:21:51 EST 1999 | Dave F
Jake: This'll get you started: 1 Read the archives 2 primary approaches to paneling are; * Moise bites * Singulation * Routing * Scoring * Shearing 3 Major depaneling technologies are: * Singulation (Wand 708.459.2400fax2421, Circuit Technolo
Electronics Forum | Sun Dec 19 23:27:22 EST 1999 | Mike
Should I manufacture my own boards or outsource them? Any opinions are welcome. I own a company and sell electronic products. Some products we sell have specific ad-on circuit boards which I have designed and had manufactured just for my company. The
Electronics Forum | Tue Dec 14 01:05:09 EST 1999 | cklau
Hi All I have a 0.7 mm diameter hole for vias, what�s the minimum annular ring for this hole diameter? Ans: Fur inner layers Min = .006" hole-pad annular ring ; inner pad dia - hole dia/2 For outer layers Min = .005" hole-pad annular ring ; outer p
Electronics Forum | Tue Dec 07 13:40:25 EST 1999 | Tim
The company I represent provides electronic manufacturing services. Some of my customers ask that we ship their boards "un-tested". By un-tested I mean we build them, visually inspect them and out they go. I find that on un-tested boards, it's not
Electronics Forum | Tue Dec 07 16:34:54 EST 1999 | Russ
Wolfgang, I appreciate your continued feedback! The main reason that I shortened the Time Above Liquidous (TAL) was it appeared that I was burning off all of the flux from the paste. By shortening the TAL to 45 seconds and decreasing peak temp to
Electronics Forum | Mon Dec 06 17:50:39 EST 1999 | Kantesh Doss
Christopher: Thank you for sharing your experience about the DPAK. Yes, out part has a heat sink at the bottom. Our stencil opening was 7 mils (in both X and Y) smaller than the pad size excepting that the stencil opening consisted of a series of zeb
Electronics Forum | Thu Nov 11 10:49:13 EST 1999 | John Thorup
Hi Jim All the major players make soldering iron testers that will test temperature, stability, ground leakag and other parameters. WellerWA2000 Hexacon G210-G310 Edsyn MS410-MS412 Bonkote MCA700 Pace P/N8001 and others There is no particular reason
Electronics Forum | Sun Nov 07 21:40:14 EST 1999 | Chris
I am looking for an inertable reflow oven which will produce ROLs of less than 10 ppm. My current reflow oven will reduce oxygen levels to 10 ppm but only when using excessive nitrogen gas (4000 scfh). In reality less gas flow may reduce oxygen lev
Electronics Forum | Sat Nov 13 14:09:45 EST 1999 | se
First, let me say what I always say: a good chem-etched stencil will print fine pitch. Chem-etch brings trap to the side walls because its a physical by-product of the process. Because they are less expensive you can add electropolish and still save
