Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [identification]

Identify chips, connectors, cables, and other components from markings, photographs, and descriptions of the surrounding circuitry or equipment.

Frequently, components are unlabeled, or their markings differ from their type number, making it difficult to find data sheets, order replacements, or even find out what a component is or does.

Please provide both sharp and properly cut images with a reasonable resolution, and a description of the circuitry or equipment of which the component is a part.

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Taking apart old electronics

I sometimes end up having someone's unwanted old electronics, usually faulty ones. Does it make sense to harvest components from such. Anything valuable I should be looking for?
Petteri H
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Is there some logic in IC name prefixes?

There are hundreds of prefixes in IC names, this page lists a number of them. For some it's easy to see that they refer to the manufacturer's name, like AD for Analog Devices or LT for Linear Technology. Others can be found with several…
stevenvh
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What is this glass bulb with two parallel electrodes on my PCB?

Might be super obvious, but I've not encountered one of whatever this little dude is before: I figured some sort of vacuum tube, but no idea beyond that. The two poles aren't linked. Found inside a heating control panel. Help would be greatly…
slothgirl
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Can you identify this logo?

Can you identify the logo on these ICs?
stevenvh
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What does a "sad face with a bow tie" represent?

Some trains in the Madrid metro network have small metal boxes with this sign on them: There are no other signs on the box and some signs only have the "bow tie". I'm guessing it's two Zener diodes head-to-head and some sort of switch, with a…
MBlanc
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Help Identifying Weird Component

Attached you find photos of a Li-Ion battery's PCB. I'd like to know what this component is called and what its use is. The component in question is the three pin stretched silver "bridge". The white blobs seem to be glue, while the black things you…
bot47
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Can anyone identify this IC

It's the 6-pin SOIC in the middle with what looks like "67T" or "T76" on the top. I can't find any info on this I'm hoping someone here has come across this. The top left pin is possibly a digital I/O pin but that's all the info I have. Any…
user64054
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What manufacturer is this "double-D" logo?

This is on an SMT transformer. None of my logo catalogs have it and Google couldn't find it, either. Looks like it could be "D"s with their flats facing each other and with the top arc extending past the face to wrap around the opposing "D"s bottom…
jfriend
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What is the name of this black, 2-pin, 0.1" spacing, leadless socket and what is it used for?

Can someone tell me the name and the function of the following component please?
kovac
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Any idea what this tool is for?

We have been doing some cleaning up out in the electronics production area and found the "mystery tool" shown in the two images below. It is made from stainless steel. The blue insulation is dipped and the black insulation is heatshrink tubing. I…
crj11
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Is this "lightning storm over a tropical island" a valid electrical symbol?

This symbol is stenciled on the circuit board for Compaq PS2021 ATX power supplies. I spent almost half an hour on Google trying to identify it, and I haven't even gotten close. I thought it might be an old company logo, but nothing came up on that…
e.James
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What's this thing which looks like a water sensor inside a PC mouse?

I found an old optical PC mouse, and decided to check what's inside. Everything seemed as usual, but there is a component I've never seen in other mice, and I don't understand its purpose (see photo below). It looks a lot like a water sensor.…
Arseni Mourzenko
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What is this four-legged part from under an inkjet printer head?

I've disassembled the print head of an old dried-out printer (EPSON Stylus Photo R300) and found a very small part under it, next to the surface with the nozzles. It's 4 mm long, 3 mm wide and 2.5 mm tall. Here's how it looks from its top (the side…
Ruslan
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Need help identifying this component

I am trying to identify this part (on left) which I found while cleaning my room. I have placed a micro SD card next to it to give an idea of its size. Update: This is what the rear looks like:
Agnel Kurian
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What is this SO8 part with all legs on one side connected together?

I believe this to be a voltage regulator of some kind (it's failed, and is resulting in a dead short straight through). However neither I nor Google Image Search is having any luck identifying the manufacturer mark. Does this look at all familiar to…
David Given
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