Electronics Forum: 1

Re: Breaking scored boards, breaking components.

Electronics Forum | Tue Nov 09 11:50:33 EST 1999 | Steve Owen Snr prod eng.

We have recently purchased equipment that would probably solve your problem. We are using 1.6mm pcb material 1/3 of which is left unscored. When the pcb is de-panelized there is no damage to any components and we have cut our break time in half.

should gold pads be pretinned, what issues are known are there?

Electronics Forum | Wed Sep 18 15:13:17 EDT 2002 | davef

Effects of Gold (Au) on Solder Properties Concentration Range in Weight Percentage w/o Au in Sn63/Pb37 Solder [A Sugarman/Loranger] * 2.0 - 3.0% Spreadability and fluidity of solder reduced (1) * 3.0% Highest acceptable concentration of Au in solder

Printed Board Fabrication for in house

Electronics Forum | Mon Mar 03 11:28:24 EST 2003 | MA/NY DDave

Hi Normally I wouldn't do it. There are too many proto express shops that supply good results and in 1-3 days. Yet if you need to, you can buy some equipment that is designed just for prototypes. And right now their are huge fire sales. YiEng, MA

Reflow Temperatures and speed for a 7 zone top/bot for conceptro

Electronics Forum | Tue Jun 17 07:17:09 EDT 2003 | James

The main problem I am having is getting the Rising slope 1-3 degrees. If I slow the conveyor down then I have too long of a reflow and if I speed it up then my ramp rate is too high. I was not sure if I need my first zones at a low temp or higher t

A.O.I recommendation

Electronics Forum | Wed Jun 08 10:32:27 EDT 2005 | rlackey

We ran an MVT 1820 Supra against a VT-Win-II for around 40K high density boards. One machine was 1/3 of the price of the other, more accurate in production, faster, and could handle larger boards. Guess which won? Fortunately we were able to loo

J-STD-001 Par 4.2.2 Temperature and Humidity

Electronics Forum | Wed Jul 18 11:49:59 EDT 2007 | davef

The auditor may be using "verify" in an ESD Program context. See ANSI/ESD S20.20 [1999], 6.1.3, Compliance Verification Plan. It gives one definition of what the auditor may be seeking. For more on verification programs, look here: http://www.protek

Trade shows for p&p in USA

Electronics Forum | Wed Nov 07 01:55:43 EST 2007 | Michael Konrad

Hi Rafael, You just missed three shows (two in Chicago and one in Orlando). Next major US show is APEX (April 1 - 3) in Las Vegas. If you want to see all the players sooner, Productronica is next week in Munich Germany. Mike Konrad Aqueous Techno

Wave and Reflow Profiler

Electronics Forum | Wed Feb 20 08:17:32 EST 2008 | ck_the_flip

Steve, KIC does. The new KIC2000 has built in dwell time sensors. You can buy KIC's wavesurfer option (like MOLE's waverider), or you can engineer a custom pallet for 1/3 the price. I made a custom pallet and took advantage of the KIC's automatic

2 oz Copper thickness??

Electronics Forum | Tue Apr 23 15:35:45 EDT 2013 | dyoungquist

Check out IPC-A-600. Revision G (July 2004) section 3.2.3 (surface) and section 3.2.4 (internal) give min/max thicknesses for various weight copper. The min also changes depending on what class (1-3) standard you are working to.

Upside down placement of a crystal oscillator is acceptable ?? As per IPC 8.3.2.9.2 clause its define Rectangular or Square En

Electronics Forum | Tue Jul 19 03:06:42 EDT 2016 | ishwarsingh1

Upside down placement of a crystal oscillator is acceptable or not ?? As per IPC 8.3.2.9.2 Rectangular or Square End Chip Components – 1, 3 or 5 Side Terminations.I am not sure whether is applicable for crystal oscillator or not . Your answer wo


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