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Anonymous Poster

Looking to identify a component

12/11/2008 10:42 AM

Greetings!

I recently opened up an electric device and need help identifying a component on the board. It's about 1.5 cm square and mostly black. The best way i can describe it is that it looks like a very fat "I" with an off-white filling on the sides of the "I" to keep it square. Its labelled with a dot, then the number 100. I can post pictures if necessary, but if you guys know of some resources to help me identify this component, I will be very grateful.
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JohnDG
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#1

Re: Looking to identify a component

12/11/2008 10:47 AM

Picture would be good. How many electical connections does it have?

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sunflare670
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#2

Re: Looking to identify a component

12/11/2008 10:52 AM

For some reason, I wasn't logged in when I made that first post. Anyways, as you can see, it has the big connector on the bottom of the picture, and it has one more on top, as I can see. There might be some connectors on the bottom, but none of it is thru-hole.
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beatenblood
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#3
In reply to #2

Re: Looking to identify a component

12/11/2008 11:21 AM

hey wht device is tht u ve opened???
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sunflare670
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#4
In reply to #3

Re: Looking to identify a component

12/11/2008 11:25 AM

Portable bluetooth printer.
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DAG
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#7
In reply to #2

Re: Looking to identify a component

12/11/2008 4:14 PM

Has the device malfunctioned?

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sunflare670
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#8
In reply to #7

Re: Looking to identify a component

12/11/2008 4:23 PM

No it has not. I just took it apart to see what was inside, and I can identify everything except this device. I don't think that it is the bluetooth module, because there was another chip that seemed to fit the bill for that.
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nick name
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#10
In reply to #8

Re: Looking to identify a component

12/11/2008 5:43 PM

If you can identify ALL other components you can draw the circuit and from its function at least determine which could be the probable function of the "unknown" part. If you do not understand the circuit then ask for help. But draw it first.
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Physicist?
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#9
In reply to #2

Re: Looking to identify a component

12/11/2008 4:42 PM

I don't recognise the casing, but I imagine that 100 is some sort of value. The dot may (or not) be a decimal point, as it may alternatively mark the orientation for visual checking.

For what it is worth, my best guess would be that it's a surface-mount antenna with a 100 Ohm termination impedance, but it could equally well be a battery (or even a large specialist capacitor).
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Anonymous Poster
#5

Re: Looking to identify a component

12/11/2008 12:37 PM

It's the Interociter!
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sunflare670
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#6
In reply to #5

Re: Looking to identify a component

12/11/2008 1:42 PM

facepalm
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Turbotroll3
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#11

Re: Looking to identify a component

12/11/2008 6:54 PM

What is the designation for it on the board? If it is "C" followed by some number as in "C3" then I would say it is most likely a capacitor, if "D" then a diode of some sort, if "R" then a resistor, "I" would signify an inductor and "U" would be an integrated circuit of some sort.

I can still remember the frown on the part's house guy's face when I went in and asked for a "F1" as in fuse #1, the fellow had no idea what I was talking about. I did however craftily bring in the dead part which turned out to be a 1A slow blow fuse according to the legend on the device.

Does your daddy know that you have taken his new printer apart?

Have FUN!

TT3

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Bricktop
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#12

Re: Looking to identify a component

12/11/2008 7:16 PM

I don't really know but... it kinda looks like a small transformer.

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tdesmit
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#13

Re: Looking to identify a component

12/16/2008 9:14 AM

It's an INDUCTOR. Probably part of a switching power supply. It's probably 10 or 100 UH, thus the 100 stamped on it. You should find a reference designator of "L" somewhere around it, on the silkscreen text (another poster mentioned "I", but the standard designator for inductors is "L"). Hopefully it will still work when you get it back together, so many things I took apart as a child never did work again , I have gotten better with age in that respect.

Tom
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sunflare670
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#14
In reply to #13

Re: Looking to identify a component

12/16/2008 3:25 PM

And indeed there is a giant L10 next to it... thank you for being the voice of obviousness, I apparently can't read a damn circuit board.
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Anonymous Poster (1); beatenblood (1); Bricktop (1); DAG (1); JohnDG (1); nick name (1); Physicist? (1); sunflare670 (5); tdesmit (1); Turbotroll3 (1)

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