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Ampinel connectors

mo0nman

Newbie

Ampinel connectors

Samstag, 7. März 2026, 12:08

Hello,

what material are the connector pins on the Ampinel? I have a Zotac 5090 OC Solid which has gold plated pins on the connectors. I know that tin and gold are a bad misk so wanted to know what the Ampinel device uses

Cheers :)

sebastian

Administrator

Samstag, 7. März 2026, 14:13

That's not a problem. Corrosion between tin and gold contacts can only occur in a few scenarios.
In a PC, it's almost impossible.
Don't let every YouTube clickbait video drive you crazy.

mo0nman

Newbie

Samstag, 7. März 2026, 18:01

Quoted from "sebastian"

That's not a problem. Corrosion between tin and gold contacts can only occur in a few scenarios.
In a PC, it's almost impossible.
Don't let every YouTube clickbait video drive you crazy.
What scenarios would it occur in? I'm not going off of any youtube videos but rather this post from Molex themselves, as well as this Reddit thread .

Speedy-VI

Senior Member

Samstag, 7. März 2026, 21:21

Here is a LINK to a Technical Resource note from TeleWire, which is as ISO 9001 certified manufacturer of Test Leads, Wire Harness, and Cable Assembles. They also say mating Gold and Tin contacts is a no-no. A quick Google search returns that Galvanic Corrosion is not likely to occur in a PC DC power connector because it requires a liquid to act as a bridge between the Gold and Tin. The concern is Fretting Corrosion which is caused by microscopic movement of the contacts due to thermal expansion/contraction and fan vibration, which can occur in a GPU DC power connector in a computer. I don't know how long it would take for Fretting Corrosion to become a problem in this case, but it seems to be a valid concern because over time, it causes the Gold to oxidize into a resistive film.

mo0nman

Newbie

Sonntag, 8. März 2026, 02:57

Quoted from "Speedy-VI"

Here is a LINK to a Technical Resource note from TeleWire, which is as ISO 9001 certified manufacturer of Test Leads, Wire Harness, and Cable Assembles. They also say mating Gold and Tin contacts is a no-no. A quick Google search returns that Galvanic Corrosion is not likely to occur in a PC DC power connector because it requires a liquid to act as a bridge between the Gold and Tin. The concern is Fretting Corrosion which is caused by microscopic movement of the contacts due to thermal expansion/contraction and fan vibration, which can occur in a GPU DC power connector in a computer. I don't know how long it would take for Fretting Corrosion to become a problem in this case, but it seems to be a valid concern because over time, it causes the Gold to oxidize into a resistive film.
I wonder if I would be better off avoiding something like the Ampinel or Wireview and just use my PSU cable directly. I have the Lian Li 1300W Edge, which has a gold plated 12v-2x6 cable.

The alternative is that I buy the Ampinel and replace the connectors on it with gold plated ones. I'd have to find somewhere to do the modification since I am not confident in my soldering skills. The only problem is I cannot find gold plated connector pins in stock anywhere. I wonder if it's possible to harvest the connector from my spare gold-plated PSU cable?

Shoggy

Sven - Admin

Sonntag, 8. März 2026, 12:57

Zitat von »mo0nman«

The alternative is that I buy the Ampinel and replace the connectors on it with gold plated ones.
This is not possible because the connector towards the GPU is permanently molded onto the circuit board.

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