Electronics Forum: 2.14 (Page 1 of 1)

Reflow oven bottom heaters

Electronics Forum | Thu Nov 16 08:57:00 EST 2017 | jandon

We found used Ersa HotFlow 2/14 reflow oven that does not have bottom side preheaters. Can it be easily and safely used in normal high mix/low volume production or is it built for specific products which does not need bottom preheaters?

Electromigration Testing

Electronics Forum | Tue Aug 31 15:43:41 EDT 2004 | davef

You�re asking the wrong person to give remedial math lessons. Anyhow, here we go: * [1.56 microgram NaCl/cm^2]*[2.54 cm/in]*[2.54 cm/in] = 10.06 microgram NaCl/in^2 * [Omegameter] / [MIL-P-28809 Beckman / Markson] = [10.06 microgram NaCl/in^2] / [GS

Solder joint dewetting or non wetting

Electronics Forum | Tue Nov 05 09:57:45 EST 2013 | cuperpeter

Hello All, We have a problem with dewetting of solder paste. Problem is most visible on the pads without components (see attached pictures) and occurs randomly, 20% of PCB's. Pcb supplier sent us a cross-section of pads with thickness of Cu, Ni and

Hi anyone have recommended pcb manufacturer?

Electronics Forum | Sat Apr 30 11:34:23 EDT 2016 | huanyupcb

High Mix,Low Volume,Short Delivery PCB Supplier. 1.The world top 500 PCB supplier.( Samsung DELL Alcatel-Lucent Huawei Lenovo FOXCONN ASUS etc ) 2.Over 15+ Years of PCB Expertise. 3.Provided "PCB & Assembly One-stop shop"service,No MOQ. 4.ISO9001 I

Advice on used pick and place machine

Electronics Forum | Mon Oct 09 13:36:30 EDT 2006 | ppminc

Phil, The QSA-30 was built by Sam Sung, Sold by Quad. Single Head 2 Nozzles around 11K CPH Quad does not support the machine but I believe you can get parts direct from Sam Sung. I am not sure if they have a registration fee. The QSA used Quad made

Supported holes, Solder, Vertical Fills, Hidden under connector body

Electronics Forum | Wed Oct 17 17:36:32 EDT 2018 | davidsmullins

Thanks for all the input! I should clarify a couple things. We are a contract manufacturer; we simply build to our customer's design prints. This particular board, we outsourced because of some requirements for processes we don't do in-house. So, we


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