ID Surface Mount Capacitor?

[Guest]

Archived from groups: alt.comp.hardware.homebuilt (More info?)

A surface mount capacitor got knocked off my favorite 486 motherboard. I
want to try to fix it, if possible. I would rather not throw away the board
cause I like 486s. I've searched on at least 100 old boards to find one of
these chips. A few times I've found chips with similar markings, but
different size and numbers.

The broken component is a tiny grey-black rectangle about 3/16 x 1/8 x 1/16
inch with one lead on each end. One end of the of the chip has a white line
printed along it ( I assume that this signals the + end of the chip
corresponding to that marking on the motherboard). The chip has the
following markings:

10 - 25
F1 2

The 2 has a circle around it. The chip is labeled on the motherboard as
TC2 (One of four of this kind). It is right next to the AT power
connector. With the chip missing off the board, the board is totally dead.

I finally found a similar chip, the same size, but it has D3 in place of F1
(all other markings are the same).

My questions: What kind of chip is it? Is there a source to replace it? Is
there a discrete component I can substitute? Can I substitute the D3 chip?

There are some other TCx components on the board that look similar but are
tan-orange color with brown printing that says 10u 16 (could be 10 micro
farad capacitors?). There are some smaller BCx, Cx and Rx components also.
Could be 3-4 different types of capacitors: TCx (two colors), BCx, Cx ??

Thank you, I would appreciate any help.

 

[Guest]

Archived from groups: alt.comp.hardware.homebuilt (More info?)

On Thu, 13 May 2004 03:48:46 GMT, "kalalau73" <rall@cts.com> put
finger to keyboard and composed:

>A surface mount capacitor got knocked off my favorite 486 motherboard. I
>want to try to fix it, if possible. I would rather not throw away the board
>cause I like 486s. I've searched on at least 100 old boards to find one of
>these chips. A few times I've found chips with similar markings, but
>different size and numbers.
>
>The broken component is a tiny grey-black rectangle about 3/16 x 1/8 x 1/16
>inch with one lead on each end. One end of the of the chip has a white line
>printed along it ( I assume that this signals the + end of the chip
>corresponding to that marking on the motherboard). The chip has the
>following markings:
>
>10 - 25
>F1 2

Possibly 10uF, 25V.

>The 2 has a circle around it. The chip is labeled on the motherboard as
>TC2 (One of four of this kind). It is right next to the AT power
>connector. With the chip missing off the board, the board is totally dead.

Tantalum Capacitors?

>I finally found a similar chip, the same size, but it has D3 in place of F1
>(all other markings are the same).

Date code?

>My questions: What kind of chip is it? Is there a source to replace it? Is
>there a discrete component I can substitute? Can I substitute the D3 chip?
>
>There are some other TCx components on the board that look similar but are
>tan-orange color with brown printing that says 10u 16 (could be 10 micro
>farad capacitors?). There are some smaller BCx, Cx and Rx components also.
>Could be 3-4 different types of capacitors: TCx (two colors), BCx, Cx ??

BCx are probably aluminium electrolytic Bypass Capacitors. These would
be connected across the supply rails of important chips.

>Thank you, I would appreciate any help.

Try reposting to sci.electronics.components.


- Franc Zabkar
--
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