Electronics Forum: copper pcb (Page 4 of 60)

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

Where can I purchase a PCB with a bare copper grid for solder flux evaluations.

Electronics Forum | Fri Aug 27 11:27:55 EDT 1999 | Brian

I have looked through the IPC web page and surfed to frustration. Can somebody give me a lead?

distance from the edge Non-plated mounting hole and with copper pads ?

Electronics Forum | Fri Oct 26 05:03:17 EDT 2018 | farouk225

Hi everybody, I have a question about the minimum distance to leave beteween a non non-plated mounting hole with copper pads and the edge of the PCB. Is there any formula or rule to apply ? For example for a hole of diamater equals to 5.6mm which

Re: Where can I purchase a PCB with a bare copper grid for solder flux evaluations.

Electronics Forum | Sat Aug 28 09:23:36 EDT 1999 | Mike McMonagle

| I have looked through the IPC web page and surfed to frustration. Can somebody give me a lead? | Check out the EasyBraid website below, they carry IPC standard coupons, flux test kits and SIR meters at reasonable prices.

Etch strain gauge in copper layer to measure deformations during press process [How to?]

Electronics Forum | Wed May 14 10:20:37 EDT 2014 | julianf

Hello all! For my mechanical engineering study I want to etch a strain gauge in the Wheatstone bridge configuration in a copper layer of an PCB. The goal is to measure the strain occurring in an PCB even during the press process! We can measure with

Re: Where can I purchase a PCB with a bare copper grid for solder flux evaluations.

Electronics Forum | Mon Aug 30 16:10:10 EDT 1999 | Dave F

| I have looked through the IPC web page and surfed to frustration. Can somebody give me a lead? | Brian: We don't use an etched board. We use a special stencil, described below and print on bare copper laminate. 3 Solder Wetting Test. Recogniz

Re: Soldering stranded wires to FR4 pcb

Electronics Forum | Fri Oct 16 14:36:11 EDT 1998 | Jeff Sanchez

| With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to overco

need to modify smt pcb with molytabs

Electronics Forum | Sun Mar 25 12:48:07 EST 2001 | jveloso7

I need to modify smt pcb which require numerous modifications. In stead of use multiple wires, of which would require multiple wires to the same spot. I would like to use molytabs. We used these in the microelectronic hybrids circuits and worked

Etch strain gauge in copper layer to measure deformations during press process [How to?]

Electronics Forum | Thu May 15 17:34:17 EDT 2014 | taiji

I always made tests with gauges on top or bottom surface of the PCB, before, during and after the process that we wanted to check. But I never tried to do it on internal layers of PCB. Don't know if that is possible. Regards

Re: Soldering stranded wires to FR4 pcb

Electronics Forum | Fri Oct 16 21:17:04 EDT 1998 | Scott McKee

| | With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to over


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