lectricleopard

joined 1 year ago
[–] lectricleopard@lemmy.world 23 points 1 month ago (1 children)

900 pages... I mean, that's a lot for a poorly run project...

[–] lectricleopard@lemmy.world 0 points 1 month ago (1 children)

From where do the gentleman's statement gain their credibility. Site your sources, please. We are having an argument on the internet folks, the consequences are dire.

This is Saturday night and this is staring to remind me of Monday morning meetings.

Have an nice weekend.

[–] lectricleopard@lemmy.world 0 points 1 month ago (1 children)

Metal whiskering is a phenomenon that occurs in electrical devices when metals form long whisker-like projections over time.

That's what the article says. EM is a subset of metal whiskering. It's not a similar thing, it's an example of it.

[–] lectricleopard@lemmy.world -1 points 1 month ago (4 children)

You got a degree in semi conductor physics? Lol

Like i told the other guy, you're being pedantic. Engineers will call all these things whiskers. And I just mentioned I deal with one of them in my work. I'm not saying the photo in the thumbnail is an example of electromigration.

[–] lectricleopard@lemmy.world 0 points 1 month ago* (last edited 1 month ago) (4 children)

You're misunderstanding me.

For instance, electrons always move the same speed in a given metal. Which of couse isn't even 'true' because temperature affects mobility.

There are multiple mechanisms for metal to migrate, grow whiskers, or whatever you like to call the individual growth on an object. I mentioned that in the case if ICs, we are concerned with one we call electromigration. I'm not saying all metal migration is due to electromigration.

You're being pedantic when all I'm saying is, I deal with these sorts of concerns in my job.

[–] lectricleopard@lemmy.world 2 points 1 month ago

Well that makes sense lol. Right over my head.

[–] lectricleopard@lemmy.world 3 points 1 month ago (3 children)

Really? Why? Too much radio play in the 90s?

[–] lectricleopard@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 children)

Electromigration in ICs typically occurs in metal interconnect, so there are no dopants there to move. Dopants are added to the silicon substrate.

[–] lectricleopard@lemmy.world 3 points 1 month ago (6 children)

This is like saying an SUV isn't a car.

OP: Look at my car

Me: I have one too. It's an SUV

You: SUV's aren't cars.

[–] lectricleopard@lemmy.world 9 points 1 month ago (6 children)

The mechanism behind metal whisker growth is not well understood, but seems to be encouraged by compressive mechanical stresses. According to Wikipedia.

Electrons in metal always move the same speed, and potential differences in modern high perf applications are never above 3.3V. There are mechanical stresses in ICs introduced during manufacturing. So these cases aren't as different as you let on.

Anyway, point is, metal moves, we have some ideas why and can model some of them. From an engineering perspective these are both tin whiskers. We call whiskers made of copper and aluminum tin whiskers. You're describing a distinction without a difference.

[–] lectricleopard@lemmy.world 67 points 1 month ago (20 children)

This can happen inside ICs and has been a known failure mode for high frequency processors for many years. I work in chip design, and we use software tools to simulate it. It's called electromigration.

[–] lectricleopard@lemmy.world 10 points 2 months ago

One of many shrines to our capitalist overlords and the mighty dollar.

All cultures use pyramids to show the reverence due to their gods, right?

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