Electronics Forum: having (Page 1731 of 3472)

Re: ESD Compliant - Air blow off to dry washed circuit board assemblies

Electronics Forum | Wed Apr 12 21:04:10 EDT 2000 | Dave F

Ashok: You still didn�t tell me why you want additional drying of your boards, but what the hey, we all have our dark secrets. Anywho, let�s consider some options for reducing the moisture of your cleaned boards: OPTION 1 - Up-Grading Your Cleaner

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Tue Apr 11 20:31:54 EDT 2000 | Dave F

Russ: You�re correct. I should have explained our reasons for preferring concave over convex better. First, we use both also ... we just prefer concave because they: * Don�t bridge any where near as easily. * Self-center better. * Seem to have mor

Re: S.P.O.T.T.

Electronics Forum | Tue Jun 11 14:58:45 EDT 2002 | Chris Lampron

Hello Sean, We are currently using a Pin in Paste process to mount some through hole relays. This particular board has 72 relays per. We have cut the stencil to overprint the hole. By putting a small amount of solder in the hole to flux the lead, th

Quad 100 operators

Electronics Forum | Fri Mar 31 14:09:16 EST 2000 | Garth Fitzner

I am looking for someone who has knowledge on the operation of a Quad 100. I want to bring that person in on a contract basis to train my staff. My facility is located near Edmonton, Alberta so ideally the right person would be in the western Canad

Re: feeder extension

Electronics Forum | Wed Mar 29 17:10:25 EST 2000 | Jon Wentz

Hi Dave, What feeder model do you have? I took a quick look in my parts list manual and again, depending on your feeder model, you might be able to buy the needed part(s) from Zevatech/Juki. Have you checked with them yet? For example, the main feed

Re: Laminate base material

Electronics Forum | Mon Mar 27 20:52:22 EST 2000 | Dave F

Marc: In printed circuit board fabrication, fabricators place sheets of prepreg between each pair of glass cores. They stack these layers into books. As they heat and press the books, the sheet melts into an epoxy glue. The thickness of the prepr

Re: Land Pattern Design for PLCC's, QFP's etc... in Full Radius Corners

Electronics Forum | Wed Mar 29 22:30:13 EST 2000 | cklau

Hi guys; There are a few points that should be taken in to considerations regarding IPC-SM-782 land pattern and design rules. As a general rule all SMT reflow pattern should be in comply with SM-782 but however for special cases like : * PLCC land

Re: Tools / Methods to remove solder balls

Electronics Forum | Thu Mar 16 10:41:34 EST 2000 | Russ

Are we talking midship SMT or wave soldering? SMT - I have found the best method is not having them (WOW) this can be accomplished through pad design, aperture design, placement accuracy, and profiling, It is my understanding however, that these

Welcome To CBAR and the Georgia Institute of Technology

Electronics Forum | Fri Mar 10 12:28:24 EST 2000 | Keith Luke

SMTnet extends a warm welcome to the Center for Board Assembly Research (CBAR)at the Georgia Institute of Technology who have joined with SMTnet to provide access to the Electronics Forum through the school's web site. SMTnet is pleased to cooperate

HAL vs. Silver Coated

Electronics Forum | Fri Mar 10 08:42:40 EST 2000 | John

We're quoting out a new board design, and one of the prospective suppliers is pitching a silver coating process over hot air leveling. We haven't had experience with boards of this type, and I am concerned about any processing issues that may come u


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