Electronics Forum: 200-300 (Page 1 of 2)

solder stain on gold finguers

Electronics Forum | Fri Feb 23 12:24:59 EST 2001 | traviss

200-300u that�s tinny but I read IPC as saying ANY metal other than gold in the critical contact areas is not acceptable.

Re: Masking Gold Finger

Electronics Forum | Fri Feb 11 16:15:05 EST 2000 | Chris McDonald

You can get a better Kapton tape (you must be using the cheap stuff) that leaves no residue. If that fails then you can get edge maskers that slide overtop of the finger and they are reusable. Or you could get a solder pallet made for the assemblies

Intrusive soldering

Electronics Forum | Mon Mar 22 16:26:10 EST 1999 | Rob Palson

Are there many of you who are soldering through hole parts in your surface mount reflow oven? How repeatable is the process? Do you need to touch up a lot after reflow? We don't do long runs maybe 200, 300 boards max. Can you just screen print t

Immersion Gold over Nickle de-wetting problem

Electronics Forum | Wed Mar 12 22:39:58 EST 2003 | MA/NY DDave

Hi Thanks more than you know for your honesty. Honesty adds 200-300% value in my book of all times. I am glad your problem was so easily solved, and I agree that you did the right thing by appologizing to your PCB supplier. Great, Lets move on Y

Wire bonding pull strength & substrate contamination

Electronics Forum | Thu Nov 03 21:40:40 EST 2005 | davef

There maybe multiple drivers to your problems. * First, decreasing bond quality with time indicates a plating issue. What's the actual thickness of your gold and nickel on the pads? * Second, the no-sticks indicate contamination. If it's organic, p

solder stain on gold finguers

Electronics Forum | Fri Feb 23 10:07:32 EST 2001 | jmlasserre

I would like to have some advise or explaination about the IPC610 spec. Page 6-51 and 6-52 concerning the solder stains on gold finguers: On the page 6-51, it's recommended to inspect the gold finguers with the unaided eye, but on the page 6-52, th

Re: Intrusive soldering

Electronics Forum | Tue Mar 23 02:36:38 EST 1999 | Bob Willis

| Are there many of you who are soldering through hole parts in your surface mount reflow oven? How repeatable is the process? Do you need to touch up a lot after reflow? We don't do long runs maybe 200, 300 boards max. Can you just screen print

Re: Intrusive soldering

Electronics Forum | Tue Mar 23 10:22:17 EST 1999 | Chrys Shea

| Are there many of you who are soldering through hole parts in your surface mount reflow oven? How repeatable is the process? Do you need to touch up a lot after reflow? We don't do long runs maybe 200, 300 boards max. Can you just screen print

Re: Solder paste print with two thicknesses

Electronics Forum | Wed Oct 07 14:28:25 EDT 1998 | MMurphy

| I am trying to find out, what possibilities I have, to print solder paste on a board, when the task is to have 120 Microns thickness for the biggest part of the board (85% of the real estate), and then have 250 Microns of thickness on the remainin

RF BOARD + SOLDER PASTE TYPE PROBLEM

Electronics Forum | Mon Nov 05 19:37:32 EST 2007 | davef

You weren't specific about the frequency band were you're operating. So, let's pound a couple of stakes in the ground. * Conventional tin-lead plating of 200-300 �m is quite satisfactory for lower frequencies in the range of 2GHz. * At frequencies h

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