Need help identifying these components

[Timur Tabi]

Here's a picture of a board I'm trying to identify:

http://tabi.org/board.gif [100KB GIF]

It has 5 different kinds of components, and I have no idea what any of
them are. Could someone please tell me?

1) An orange component on the left, labelled "A5".
2) A black component next to it, labelled "A82".
3) Four smaller black/silver components, labelled "1002" and "1908".
4) Another black component in the upper-right, labelled "2A".
5) A larger black/silver component on the lower-right, labelled "820".

I assume these are basic components, like resistors and diodes, but
they don't look anything like what I used back in my college
electronics labs.

Any help is greatly appreciated.

 

[nospam]

nospam_timur@tabi.org (Timur Tabi) wrote:

Here's a picture of a board I'm trying to identify:

http://tabi.org/board.gif [100KB GIF]

It has 5 different kinds of components, and I have no idea what any of
them are. Could someone please tell me?

1) An orange component on the left, labelled "A5".

Dunno, looks like a capacitor but they are usually unmarked. Might be a
resetable fuse?

2) A black component next to it, labelled "A82".

Probably a BAS21 diode

3) Four smaller black/silver components, labelled "1002" and "1908".

Resistors. The last didgit is how many zeros to add for the value in ohms
so 1002 = 10000 or 10k for example. Oh the 1908 will be 8061.

4) Another black component in the upper-right, labelled "2A".

Probably MMBT3906 transistor

5) A larger black/silver component on the lower-right, labelled "820".

Another resistor.

 

[dont know]

Timur Tabi wrote:

Here's a picture of a board I'm trying to identify:

http://tabi.org/board.gif [100KB GIF]

It has 5 different kinds of components, and I have no idea what any of
them are. Could someone please tell me?

1) An orange component on the left, labelled "A5".
2) A black component next to it, labelled "A82".
3) Four smaller black/silver components, labelled "1002" and "1908".
4) Another black component in the upper-right, labelled "2A".
5) A larger black/silver component on the lower-right, labelled "820".

I assume these are basic components, like resistors and diodes, but
they don't look anything like what I used back in my college
electronics labs.

Any help is greatly appreciated.

1)orange comp = tantalum cap
2) black,three legs = transistor
3) four smaller comp,blck = resisters and there vaslues on ohms
4) not to clear = could be anothere transistor
5) larger wattage 820 ohm resistor, maybe 1/2 watt

have fun

 

[Lewin A.R.W. Edwards]

2) black,three legs = transistor

Diodes, voltage regulators, temperature sensors and brownout detectors
also come in the same package.

 

[JW]

On 13 May 2004 09:43:10 -0700 larwe@larwe.com (Lewin A.R.W. Edwards) wrote
in Message id: <608b6569.0405130843.4136f4c0@posting.google.com>:

2) black,three legs = transistor

Diodes, voltage regulators, temperature sensors and brownout detectors
also come in the same package.

Pico-fuses as well.

 

[Timur Tabi]

nospam <nospam@nospam.invalid> wrote in message news:<aul2a0hean6l2h4tpq0vccod3d6sgckoku@4ax.com>...

Resistors. The last didgit is how many zeros to add for the value in ohms
so 1002 = 10000 or 10k for example. Oh the 1908 will be 8061.

What's an 8061?

5) A larger black/silver component on the lower-right, labelled "820".

Another resistor.

82 ohms?

 

[Timur Tabi]

"dont know" <mojo@nospam_netscape.com> wrote in message news:<cfdoc.39369$n7P1.10428@twister01.bloor.is.net.cable.rogers.com>...

1)orange comp = tantalum cap

Do you know what the A5 stands for? I've never heard of a tantalum
capacitor, so I looked them up, but I haven't seen anything that helps
me understand what A5 is.

 

[John Miller]

Timur Tabi wrote:

nospam <nospam@nospam.invalid> wrote in message
news:<aul2a0hean6l2h4tpq0vccod3d6sgckoku@4ax.com>...

Oh the 1908 will be 8061.

What's an 8061?

A 1908 read right-side-up.

--
John Miller
Email address: domain, n4vu.com; username, jsm

The [Ford Foundation] is a large body of money completely surrounded by
people who want some.
-Dwight MacDonald

 

[Peter Bennett]

On 16 May 2004 05:42:22 -0700, nospam_timur@tabi.org (Timur Tabi)
wrote:

"dont know" <mojo@nospam_netscape.com> wrote in message news:<cfdoc.39369$n7P1.10428@twister01.bloor.is.net.cable.rogers.com>...

1)orange comp = tantalum cap

Do you know what the A5 stands for? I've never heard of a tantalum
capacitor, so I looked them up, but I haven't seen anything that helps
me understand what A5 is.

I expect it is a ceramic capacitor, not tantalum.

Some chip capacitors are marked with an alphnumeric code like that -
I've seen a list of value vs. code somewhere, but can't quiclky find
it now...



--
Peter Bennett VE7CEI
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