Questions tagged [gold]
17 questions
11
votes
4 answers
Gold coated multimeter test probes
I found around a couple of damaged "gold coated" probes, after checking the inner wire it happens to be made of cooper, my questions here are simple
1) Why coat the tips if the rest of the probe is just copper?
2) In order to decrease the total…
GoatZero
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6
votes
2 answers
Gold coated pads
Is there any difference between a gold coated pad and a gold pad? I have been ordering boards from OSH park, they are really good quality, I'm just wondering what benefits this has over silver or bare copper pads.
What are the benefits of usign a…
GoatZero
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5
votes
4 answers
Why not nickel-plated edge connectors?
The tracks used as an edge connector are gold coated to improve contact with the female connector: bare Cu oxidizes, and also wears out if they are inserted and removed repeatedly. Au cannot be applied directly to Cu, so electroless Ni + immersion…
LW1ECP
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5
votes
2 answers
How thick a gold finish on a pcb for wire bonding?
As a partial reparation for my previous question today.
Please allow this rather esoteric/ but on topic question.
I was sending out a pcb that will have gold wire bonding pads.
It was a option at our board house. I got a call when I was requesting…
George Herold
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4
votes
1 answer
Galvanic action on gold plated PCB
It has been always said that having gold plating on a PCB has lots of advantages. Not only does it give a good clean low resistance contact, but the perfect flat surface. However based on the galvanic series table, gold and tin\lead (or even copper)…
Mohammad Yousefi
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3
votes
1 answer
How do I solder thick goldplated DIA pins?
I am struggling with soldering some pretty think gold plated DIA pins to one of my boards.
I've tried various things such as;
Increasing the heat of my soldering iron, but am afraid of burning my board.
Sand off some of the gold plating to try…
Rik Roukens
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2
votes
0 answers
Appreciate help in identifying this vintage IC - Fairchild HL41109 QB
Trying to find out what this one is has been a real head-scratcher. Google leads me down numerous rabbit-holes to dead ends. And I see 1 or 2 for sale on eBay, but apparently they have no idea what it is either. Insight, help, moral support would…
1
vote
1 answer
Why do old ICs especially CPUs have golden caps and bottom lids?
What was the advantage of having a golden heat spreader and bottom lid ?
Contacts make sense because of the electrical properties. This is still done today.
But what were the effects of using gold where no electrical signal passes through.
Bonus…
Howie1337
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1
vote
0 answers
Fix gold plating on pins has been to repair charging
To begin, apologies in advance if this is the wrong place for this kind of question.
I have a Fitbit where the gold plating on the charging pins are fading causing inconsistent charging. Is there a way/has anyone had success repairing charging pins…
Makoto
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1
vote
1 answer
Should gold tips be on the top and bottom copper layers for PCIe golden finger?
I am trying to order a PCIe golden finger. It is my first time to create this type of PCB. May I just double check that
Gold tips should be on the top and bottom copper layers, right?
I should do hard gold plating, right?
Is it necessary to have…
Ruiying Wu
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1
vote
1 answer
Delamination or missing gold on PCB pads
Today I received some PCBs I ordered, and they look like they are missing the gold from the ENIG process in some areas. Am I correct? What is the cause, and should I be concerned? They seem to still be conductive, but I am worried about in field…
user1080943
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1
vote
1 answer
How signifigant of an issue is Gold Embrittlement?
I have heard about gold embrittlement but have not seen any data regarding failure rates, or how long before solder joints are at risk of failing. We use an ENIG finish on all our boards and I'm wondering if gold embrittlement should be something we…
THEMuffinMan7
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0
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3 answers
Why silver plating for 3.5 mm stereo jack
Never thought about it until previous part I used, 3.5 mm stereo jack, gold plated, has depleted in the place I was buying it from.
Research for replacement shows that such connectors may have gold or silver plating.
(gold) or
(silver)
Ok for gold…
Anonymous
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2 answers
How to use gold finishing to reduce corrosion on a moisture sensor?
Background
I have a raspberry pi with a moisture sensor that suffers from corrosion. My setup is similar to the one described in this raspberrypi.stackexchange question about corrosion of a moisture sensor.
A solution to this problem, suggested in…
MuadDev
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0
votes
1 answer
How to make an electrical connection to thin gold plating?
Hello fellow engineers.
I am trying to make an electrical connection with some gold plating. The gold plating is shaped like a rectangle, with dimensions of 3mm x 1.5mm x 0.1μm thick. Here is what the part looks like, it's quite small.
My…
Intrastellar Explorer
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