SMD Device Marking

[OzFlyGuy]

Hello,

I've got a PC motherboard that has a 3 legged device on it - presumably a
transistor, FET etc .... with the markings N1D1 on it ...

Anybody got any clues what it might be ?

Thanks, Ian

 

On Jun 18, 10:05 am, "OzFlyGuy" <imco...@internode.on.net> wrote:

I've got a PC motherboard that has a 3 legged device on it - presumably a
transistor, FET etc .... with the markings N1D1 on it ...

Or a voltage regulator, or a shunt-type regulator, or a general-
purpose diode, or a temperature sensor, or ... ... ...

 

[ian field]

"OzFlyGuy" <imcowan@internode.on.net> wrote in message
news:137d4a3cpcj7d8d@corp.supernews.com...

Hello,

I've got a PC motherboard that has a 3 legged device on it - presumably a
transistor, FET etc .... with the markings N1D1 on it ...

Anybody got any clues what it might be ?

Thanks, Ian

Try this:-

http://www.tkb-4u.com/code/smdcode/smdcode1.php

 

[Franc Zabkar]

On Tue, 19 Jun 2007 00:05:51 +1000, "OzFlyGuy"
<imcowan@internode.on.net> put finger to keyboard and composed:

Hello,

I've got a PC motherboard that has a 3 legged device on it - presumably a
transistor, FET etc .... with the markings N1D1 on it ...

Anybody got any clues what it might be ?

Thanks, Ian

Is there a circuit reference on the PCB, eg Qnn, Dnn? Can you tell us
what components are nearby?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[Frank]

another one

SMD Marking Codes beginning with ............
http://clivetec.superihost.com/SMD_Codes0.htm








OzFlyGuy <imcowan@internode.on.net> wrote in message
news:137d4a3cpcj7d8d@corp.supernews.com...
Hello,

I've got a PC motherboard that has a 3 legged device on it - presumably a
transistor, FET etc .... with the markings N1D1 on it ...

Anybody got any clues what it might be ?

Thanks, Ian

 

[Sergey Kubushin]

Frank <erty@home.com> wrote:

Unfortunately enough they are all for small packages with cryptic marking.

I do have a couple of tubes with some ST Micro transistors (?) or something
that I can not identify. And ST Micro itself is of no help -- they don't
have their markings available from their site and 90% of their PDF
datasheets don't tell you what the markings are...

My parts are in D-Pack (TO-252) and have ST logo and 3 lines of text on
them:

ST(logo) CHN
K922
LD338

Can anybody tell what it is?

another one

SMD Marking Codes beginning with ............
http://clivetec.superihost.com/SMD_Codes0.htm

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