Electronics Forum: ipc and 2221 (Page 17 of 28)

0402 pad and stencil aperture design

Electronics Forum | Thu Oct 30 15:07:40 EDT 2008 | jemills

Hello I have a new 0402 pad design on a recent board were building in future. On closer look i thought the pad was a thru hole mount , but upon closer inspection the round pads are for 0402 comps. I had a discussion with the engineer and he said

Nub bying p&p, stencil printer and reflow.

Electronics Forum | Sat Apr 16 09:23:43 EDT 2011 | jebs

Thank you for good answers. The Evest EM-780L machine that I linked to further up has a IPC-9850 at 25000 so if I get half I might be able to get the work done. How many people do you have working on the SMT line? Do you have all you're machines in

Pick and Place vs CAD File

Electronics Forum | Sun Nov 26 01:50:32 EST 2017 | alexeis

Hi Ivan, Our solution works with 3 type of data with XY: 1. CAD - the best choice but, as you mention, I isn't available for all products. From our experience, it is available in 30%-50% of products. 2. IPC - This file available in 80%-90% of produc

Re: Humidity Control and Moisture Sensitivity

Electronics Forum | Tue Dec 05 15:10:55 EST 2000 | Francois Monette

Victor, here are a few more elements of information to answer your question. Both the temperature and relative humidity on the manufacturing floor have a significant impact relative to the rate of diffusion of moisture inside a plastic package and t

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon

| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F

| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt

Re: Solder mask materials and equitements wanted

Electronics Forum | Sat Aug 29 08:43:35 EDT 1998 | Dave F

| Hi, Friends, | Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! | Have a good day | Xingsheng Xingsheng: Consider the follo

Re: Bow and Twist of PCB's

Electronics Forum | Wed Aug 19 08:00:55 EDT 1998 | Earl Moon

| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde

Re: Bow and Twist of PCB's

Electronics Forum | Wed Aug 19 12:20:24 EDT 1998 | MARK J.

| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde

Re: Green coating and through-hole plating

Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F

| Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a


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