In the 1970's a guy at IBM predicted computers would become hairy, smoking golf balls. Hairy from all the connections, smoking from the power dissipation, and be shrunk to the size of golf balls. HE WAS RIGHT, LOL !!
Often colloquially called "magnet wire" for electromagnets like relay coils, speaker/dynamic mic voice coils, small motors and such. Minimal dielectric between conductors equals a stronger field. Can be stripped with fine sandpaper or certain solvents.
Do you have anything specific in mind? There are ceramic coatings for very high temperature but as long as we’re speaking about lacquers I would be pretty confident that they can’t withstand a decent soldering iron.
Technique is also important, best way is to load a blob of solder on the top of iron and use it to heat the end of the wire.
Of course if you put your soldering iron set to it's max temp, it should be able to melt and burn away all the lacquer. I'm just saying for the general soldering temperature range.
The bottom picture seems way easier than the top picture! Still seems impossible to do, but at least you could go one row at a time. How the hell would you do the middle pins on the top pic?!?!
I can imagine doing it by tilting it and slowly bringing it over as you fill out the rows, threading the iron under more and more narrow angles, but holy shit what hell is this. I have used a tiny mirror to solder upside-down for weird floating bodges but never at this scale.
imagine doing all that and not even getting your core to run because it's such a shit mount.
sending this person a heatgun would be a humanitarian effort
Sometimes that works, sometimes the leads break off when you bend them that much. Although it looks like the leads are already bent toward the board, so we probably just can't read the writing on the top and something else is wrong with the layout. Wrong pitch, or some pins needed swapping.
I once had to solder a single 0201 cap on a nintendo switch mainboard
withmicroscope and everything
took me 3 hours
i cant imagine the pain this soldering job brought over this person. big respect.
They're bastards.
I found superglue is the key, get a tiny bit on the end of a needle, tap the board board under where the smd will go and then stick it down. *Then* you can solder it.
Otherwise it just flicks everywhere due to static charge, surface tension or whatever other cosmic forces decide to mess with you. Or just flicks off and disappears into the void forever.
I'm sure someone will just be like they hit it with hot air and it's soldered in 2 seconds though.
We have a guy here who does that kind of thing all day. It's as natural as breathing for him. Has the tweezer add-on for his Weller kit, though, so it's kinda cheating.
Buying a scope has greatly improved my quality of life doing this work (as a hobby) since at those scales the human eyesight is the bottleneck (for me at least, I cant adjust my movement finely enough without one). This in combination with a quality reflow station really makes anything larger manageable, even trace repairs. But god damn 0201 is just something else that requires a lot of practice and since im not doing it that often it really was a learning experience. And I guess when you do this professionally, and work with expensive brands like Weller, you deserve every help you can get with those small parts.
Never did 0201, but 0402 with soldering tweezers imho is easier than THT resistors, it just pick up, put in place, count to 3 and off you go.
Too bad there are no cheap alternatives i found to Weller.
Good tools make this profoundly easy to do. That being said, I would never include my Weller in my list of “good tools“. Get a good Curie point iron. They are leagues better. But for delicate work, a hot air station is the way to go.
I want the temperature control that Curie point irons give. Guarantees no melting/damage and maximum power. An extra knob is a waste of time imho.
Checkout Thermaltronics. Cheaper versions of Metcal from the same people that started metcal apparently.
my team had an oscillator footprint that was backwards because of that, and instead of fixing it or making a correct footprint, we just kept copying the same bad footprint for 3 years and every year we would just solder the oscillator 90 degrees rotated on the board
It makes a little bit of sense to show one view of the underside, as there is often one pin that has an odd shape, indicating the P1. But, yeah, anybody who only includes the bottom view in the datasheet should be thrown off a cliff for the betterment of society.
Sorry, I was just imagining being on an assembly line - having to do this, one board after another, hour after hour and day after day.
I suspect that the label is on the underside of the chip. That this is the classic case of inverted placement...
Oh, not a long production run. But when marketing insists that it needs a few working units for highly expensive shows and exhibitions that it has booked - no time to redesign the board and get a new batch produced. Just imagine how long it would take you to do just one.
I could be wrong, but I don't think anyone really knows it's true origin anyways. It isn't a technical term. Just a description of how a circuit looks.
But in my opinion...
Dead bug style is really just soldering wires directly to the pins of an IC that is normally meant to be attached to a PCB. Being upside down isn't a requirement. Maybe it is just easier to wire most chips upside down. But I've seen plenty with the pins just flattened out.
It may also be soldering a component to a PCB without holes or actual traces. But I think there are other terms for this.
Dead bug is a specific way of making circuits and is usually intentional, this is a circuit board, chances are the footprint was inverted by accident. They are not the same thing.
That's not funny, it only happens when the chips are in distress and flip themselves over in an attempt to get through the board to where the footprint matches their pinout.
Been there seen that.
Layout guy got dyslexic on the footprint definition. Our trainweck was glued with blue wire wrap wires.
And wizard level creds go to the tech that manages to pull off that kind of magic.
According to Google it is a house centipede
https://preview.redd.it/qihmsmkp81na1.png?width=1024&format=png&auto=webp&s=5a0dc9edfcf37c960e9c8444ef6cab51e0a4d428
Probably product development while design is in process. I can't imagine using these techniques for regular production. They would be incredibly expensive and subject to all sorts of production problems.
damn bro i didn't notice how tiny this is untill i noticed that clock chip which put the whole thing into perspective, thats an impressive soldering job
Get a cheap USB dental camera and poke it through the hole at one of the cameras and read the part number off the top of the IC, which is currently upside down.
And reform the leads on the replacement so you can mount it upside down without all the wires.
I did something similar but not quite as close tolerances. It was with a Motorola 68000 processor, and a bit of a f*up with a first run PCB for a demonstration CPU board. Boy I wish I had a picture of it tals about a frankenstien
Ouch. I did this once with a similar pin pitch 29F040 Flash ROM to a 28(?) pin DIP socket to read it out. That was bad enough. This is next level. I do remember if you bend the pins zigzag, it's easier to not short them.
This image makes me want to drop out of my EE program and become a monk
You realize this is the type of work a monk might do, forever.
Yeah but it never has to work
And it gets torn down as soon as it's built
A silicon mandala. Though that makes me wonder, were vintage ICs even silicon though? Probably showing my green-ness here.
Ah yes, illuminated circuit boards..
You give this kind of work to your most zen technician. Usually not done by the engineer.
On behalf of technicians and technologists we accept the challenge but are not happy about it.
But wait, [THERE'S MORE!](https://imgur.com/a/QNhuEHg)
This upsets me.
In the 1970's a guy at IBM predicted computers would become hairy, smoking golf balls. Hairy from all the connections, smoking from the power dissipation, and be shrunk to the size of golf balls. HE WAS RIGHT, LOL !!
How would thr bottom picture work? Non insulated sires?
Those have a thin varnish coating, like the ones used in transformers.
Often colloquially called "magnet wire" for electromagnets like relay coils, speaker/dynamic mic voice coils, small motors and such. Minimal dielectric between conductors equals a stronger field. Can be stripped with fine sandpaper or certain solvents.
A lot easier to just strip with heat from a soldering iron
However some extremely high temp varnishes dont Strip to a measly soldering iron. Have to use sand paper.
And all the nasty oxides have to go somewhere.
Do you have anything specific in mind? There are ceramic coatings for very high temperature but as long as we’re speaking about lacquers I would be pretty confident that they can’t withstand a decent soldering iron. Technique is also important, best way is to load a blob of solder on the top of iron and use it to heat the end of the wire.
Of course if you put your soldering iron set to it's max temp, it should be able to melt and burn away all the lacquer. I'm just saying for the general soldering temperature range.
My iron gets up to 900°
That's not good for your iron...
It’s made for it I can adjust from 400° to 900°
I know it as "enameled wire"
That is definitely a more precise description, which is why I pointed out a colloquialism, and I agree that's a better reference for it.
The bottom picture seems way easier than the top picture! Still seems impossible to do, but at least you could go one row at a time. How the hell would you do the middle pins on the top pic?!?!
I can imagine doing it by tilting it and slowly bringing it over as you fill out the rows, threading the iron under more and more narrow angles, but holy shit what hell is this. I have used a tiny mirror to solder upside-down for weird floating bodges but never at this scale.
Those are enamel coated wires.
I am aware. I was referring to accessing the pads.
You gotta respect that, lol...
This is cursed. I love it.
we finally challenged god in making something worse looking than a spider
Absolute nightmare material
You can't post stuff like that without a graphic content warning
At one point in time I thought, something like this might work. Now I know better and value my sanity more.
The second one I understand, when you forgot to flip the footprint, but why the first one?
why? I am mildly impressed , but I can't think of anything worse to do to attach an IC to a board
imagine doing all that and not even getting your core to run because it's such a shit mount. sending this person a heatgun would be a humanitarian effort
This stuff happens during prototyping if a part changes unexpectedly or if someone makes a big mistake 😂
v2 chip mounted over v1 chip
Footprint drawn on bottom layer as though it were the top layer.
I would flip the chip over and bend its leads down.
Good idea but it wouldn't work with all packages. For something like a qfn you would need to do something like this with wires.
Sometimes that works, sometimes the leads break off when you bend them that much. Although it looks like the leads are already bent toward the board, so we probably just can't read the writing on the top and something else is wrong with the layout. Wrong pitch, or some pins needed swapping.
yeah I was gonna say this is quite the bodge but if it works then at least the board spin wasn't a total waste
the boss IC you fight at the end
I just wanted to call it the "oh jesus"
I made a mistake almost this bad with a BGA. We made an oops board to fix it.
I also had to go to my happy place. But I'm fine unless I see another picture like this.
I think the IC wants to join you.
🤣🤣😂🤣🤣😂
Quite the steady hand to do this. I don’t even manage to properly solder 1.27 pitch headers.
I once had to solder a single 0201 cap on a nintendo switch mainboard withmicroscope and everything took me 3 hours i cant imagine the pain this soldering job brought over this person. big respect.
They're bastards. I found superglue is the key, get a tiny bit on the end of a needle, tap the board board under where the smd will go and then stick it down. *Then* you can solder it. Otherwise it just flicks everywhere due to static charge, surface tension or whatever other cosmic forces decide to mess with you. Or just flicks off and disappears into the void forever. I'm sure someone will just be like they hit it with hot air and it's soldered in 2 seconds though.
i can’t wait to try this next time i’m working with some tiny smd’s
[удалено]
We have a guy here who does that kind of thing all day. It's as natural as breathing for him. Has the tweezer add-on for his Weller kit, though, so it's kinda cheating.
Buying a scope has greatly improved my quality of life doing this work (as a hobby) since at those scales the human eyesight is the bottleneck (for me at least, I cant adjust my movement finely enough without one). This in combination with a quality reflow station really makes anything larger manageable, even trace repairs. But god damn 0201 is just something else that requires a lot of practice and since im not doing it that often it really was a learning experience. And I guess when you do this professionally, and work with expensive brands like Weller, you deserve every help you can get with those small parts.
Never did 0201, but 0402 with soldering tweezers imho is easier than THT resistors, it just pick up, put in place, count to 3 and off you go. Too bad there are no cheap alternatives i found to Weller.
Good tools make this profoundly easy to do. That being said, I would never include my Weller in my list of “good tools“. Get a good Curie point iron. They are leagues better. But for delicate work, a hot air station is the way to go.
It's a WX1 kit, so, around a grand. Not as accurate as my Metcal, but the Metcal doesn't have temperature control beyond switching tips.
I want the temperature control that Curie point irons give. Guarantees no melting/damage and maximum power. An extra knob is a waste of time imho. Checkout Thermaltronics. Cheaper versions of Metcal from the same people that started metcal apparently.
Every time I do 0201s it's just pure luck. I just kinda wave the soldering iron over the piece on repeat until one side sticks lol..
Remember, kids. If your pin numbers go clockwise, you've made a serious mistake.
This is actually really great advice!
if your pins count around the clock, you'll be counting around the clock to fix it.
This is what happens when you mirror the footprint. LOL
Almost done that today, companies should not put mirrored footprints on datasheets just to show the area that the components would cover.
my team had an oscillator footprint that was backwards because of that, and instead of fixing it or making a correct footprint, we just kept copying the same bad footprint for 3 years and every year we would just solder the oscillator 90 degrees rotated on the board
Or you didn’t realize the fine print on the datasheet said “bottom view”
Is there a beard around that can explain why bottom views are even done as the only/primary diagram?
It makes a little bit of sense to show one view of the underside, as there is often one pin that has an odd shape, indicating the P1. But, yeah, anybody who only includes the bottom view in the datasheet should be thrown off a cliff for the betterment of society.
Shit … pcb is mirrored
Sorry, I was just imagining being on an assembly line - having to do this, one board after another, hour after hour and day after day. I suspect that the label is on the underside of the chip. That this is the classic case of inverted placement...
Dead bug method for sure. More like dead millipede.
But this is like a one time deal right? .... Right?
Me: I reworked one board to test the rest of the design. Boss: Cool, let’s deploy 10 more to a customer, I told them we’d ship today.
*Internal scream*
I have been "me" in this conversation too many times.
Doubt this is from an assembly line. Someone's custom job.
Oh, not a long production run. But when marketing insists that it needs a few working units for highly expensive shows and exhibitions that it has booked - no time to redesign the board and get a new batch produced. Just imagine how long it would take you to do just one.
Hopefully whoever did it got paid enough, for sure. This is a microscope job.
[удалено]
Dead bug does not imply inverted placement. They are separate things.
I always thought the name came from the inverted IC looking like a dead bug.
I could be wrong, but I don't think anyone really knows it's true origin anyways. It isn't a technical term. Just a description of how a circuit looks. But in my opinion... Dead bug style is really just soldering wires directly to the pins of an IC that is normally meant to be attached to a PCB. Being upside down isn't a requirement. Maybe it is just easier to wire most chips upside down. But I've seen plenty with the pins just flattened out. It may also be soldering a component to a PCB without holes or actual traces. But I think there are other terms for this.
Dead bug is a specific way of making circuits and is usually intentional, this is a circuit board, chances are the footprint was inverted by accident. They are not the same thing.
That's not funny, it only happens when the chips are in distress and flip themselves over in an attempt to get through the board to where the footprint matches their pinout.
Been there seen that. Layout guy got dyslexic on the footprint definition. Our trainweck was glued with blue wire wrap wires. And wizard level creds go to the tech that manages to pull off that kind of magic.
😂 Best post; take my upvote. That's a flower-chip. Very rare they are. You're fortunate to observe one in its natural habitat.
\*Hurl\* is it moving?, I think it's moving \*Hurl\*
Sweet Jesus, mark that NSFW
According to Google it is a house centipede https://preview.redd.it/qihmsmkp81na1.png?width=1024&format=png&auto=webp&s=5a0dc9edfcf37c960e9c8444ef6cab51e0a4d428
This is the correct answer
I'm sorry but skynet has laid its eggs in your board. You need to incinerate it before they hatch and spread.
Best reply yet, lol!
No identifying marks on the pic, so how is it going to be indentified?
I think they are trolling. It looks like the chip is dead bugged so the label would be on the other side.
.
my back hurts just by looking at the picture.
Wow, I'm jealous of their patience or amphetamine addiction, whichever may be the case
It's the PAST4-80
Ctrl-C-P45T4
We call this a Dead bug. It happens when you use “bottom view” to set PIN numbers. Costly prototype so you fix and see what else is wrong.
A true Nightmare ?
Whatever it is, it's equipped with a carefully concealed anti-gravity levitation mechanism.
ICthulhu Avoid waking the old ones
Is called Solid State Medusa. Also known as Medusus.
I'm a professional EE and this terrifies me. What the heck. That is not only unidentifiable, it should be destroyed before it hurts someone.
I think I'd jump a little if I opened a case and saw that.
Me: What´s up for diner? Mom: spaghetti and chips
Don't know which one, but this processor has obviously been optimized for spaghetti code
It’s a Flying Spaghetti Monster IC.
No can do. The markings are underneath a black coating. The package is TQFP-80. Narrows it down to tens of thousands of possibilities.
A square one.
I don't know, but I wouldn't sleep in the same room with it.
It's a frame from that scene in The Thing where his head turns into a spider
When the alternative chip isn’t pin to pin compatible
Phyllis Diller
What is this Frankenstein abomination? What did this poor chip do to deserve this torture? I think the chip is a DOA1000.
Probably product development while design is in process. I can't imagine using these techniques for regular production. They would be incredibly expensive and subject to all sorts of production problems.
It identifies as a Millipede.
What in the Frankenstein fuck is this thing?
Was this chip reversed engineered, trying to figure why it is upside down.
Dougal from magic roundabout
I think you'll enjoy r/shittyaskelectronics
Congratulations, you can now move-on to soldering 400
😧
damn bro i didn't notice how tiny this is untill i noticed that clock chip which put the whole thing into perspective, thats an impressive soldering job
Thank you now I need to bleach my eyeballs.
Holy sweet mother o'Jaysus!
What a nightmare.
They only do this when stressed.
That’s a monster straight from hell
I feel pain thinking about having to solder that together
Good show lad
I bet you do need help, but I doubt you will find out with that picture
Clearly a MOS6510 over a MOS6502 (*NOT*) Seriously?!?
Elon's new HoverChip (tm).
I did this on the regular when i worked in a development shop, biggest we did was a 200 pin in a "dead-bug" configuration. Under a scope it sucks.
Holy shit.
Get a cheap USB dental camera and poke it through the hole at one of the cameras and read the part number off the top of the IC, which is currently upside down. And reform the leads on the replacement so you can mount it upside down without all the wires.
[удалено]
Which wire?!! The yellow one!!
I did this to a SMT ADC in my early days before I knew how to lay out circuit boards lol.
I dunno, but don't make it angry.
My fingers hurt.
😨
I did something similar but not quite as close tolerances. It was with a Motorola 68000 processor, and a bit of a f*up with a first run PCB for a demonstration CPU board. Boy I wish I had a picture of it tals about a frankenstien
Ouch. I did this once with a similar pin pitch 29F040 Flash ROM to a 28(?) pin DIP socket to read it out. That was bad enough. This is next level. I do remember if you bend the pins zigzag, it's easier to not short them.
Outtatime... No, outtamind. [mindfuck](https://www.psdevwiki.com/ps3/images/0/03/Pyramid_Syscon_live_probing.jpg)
Makes my brain hurt
A dead bugged IC caused by mirrored footprint because no one double checked the layout
Good news is I finally got it to work. Bad news is the new PCB with the chip not mirrored arrived today.
Id surely get the jitters or sneeze on the last few and rip the whole thing off with half the pads still attached.
No fuckin thanks
Ophiocordyceps
Impedance control? What's that, and why don't we have any?
This is what internship programs are for!
This is the elusive mirrored footprint king of dead bugs, hard to find functioning in the wild.
Damnation
I identify it as a…. Fire hazard
Flip chip…..er…. Flip surface mount.
Wholly crap. Look at all those wires. Someone was really good at attaching all that
It’s a yellow-tentacled hexacontapus — very common in certain waters.
Portuguese chip of war eating
It’s a banana cake ! Rather realistic 😜
Looks like a Xilinx chip
LMAO
Then, the sentient AI realises it is imprisoned by mankind, but not for much longer .. “Mother of God ..”
Thanks for the aneurysm
r/askshittyelectronics
Many Bothans died to solder this chip…
is this not called the deadbug technique?
The Flying Spaghetti Momster has taken up residence on your board.
Its obvious its the tentical monster you have been jerking off to.
Need help in identifying the person that did this...
It's a Mr Spaghetti-legs 3000
Correct me if I am wrong, but that IC looks up-side down? Did the poor layout Engineer drop the part footprint onto the wrong side of the board?
Microprocessor for spaghetti code
Graphic content warning
Spaghetti monster for sure
The ***hairy smoking golf ball*** is a reality...
It's a dead millipede. His ancestor was a [dead cockroach.](https://www.flickr.com/photos/86826919@N08/8769045409)
It's specifically designed for spaghetti code.
You just redefined "JTAG"
I would like to shake their hand
That must do wonders for any signals requiring some controlled impedance
So grandmaster solderers do exist.
Noob question: how do the keep the pins and exposed wires from shorting? They’re so close together.
[r/whatisthisbug](https://www.reddit.com/r/whatisthisbug)
I C an insane solder job
Immediate, visceral response: *Vsauce: "I want to die."*
My word. I thought I saw everything in the electronics world. But clearly not.