Maker Pro
Maker Pro

Need help on SMD Code

rambo99

Apr 24, 2011
63
Joined
Apr 24, 2011
Messages
63
I have a SMD which I check in SMD Code AS ZMV833ATA but to me it not right Because the company name is ST
AE
D302 on the SMD and it not a Zetex Company can any help on this SMD Part
The Package is SD
 
Last edited:

Resqueline

Jul 31, 2009
2,848
Joined
Jul 31, 2009
Messages
2,848
One important aspect of SMD identification is knowing the case outline. Also, are you saying it's an ST-Microelectronics device labeled AE, with D302 on another line?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Can you tell us what package it's in?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
The Package SD

Sorry, that doesn't help me. I don't know of a package called SD. Examples of package include things like SO-8, SOT-23-5, TSOP-28.

If you don't know the package it's in, an image next to something for scale would help. Even knowing the number of pins would be a big help.
 

rambo99

Apr 24, 2011
63
Joined
Apr 24, 2011
Messages
63
Sorry, that doesn't help me. I don't know of a package called SD. Examples of package include things like SO-8, SOT-23-5, TSOP-28.

If you don't know the package it's in, an image next to something for scale would help. Even knowing the number of pins would be a big help.

I sorry I can not give you any more Detail as this SMD part is on a Segate Hard Drive the company on this SMD shows ST for the Company and AE it hard to say what this part is because in not in the code book
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Can you count?

How many leads does it have?

Can you measure it?

what size is the black epoxy part?

Are the legs all on one side?

Does it have a tab?

There is very little we can do is a vacuum!
 

rambo99

Apr 24, 2011
63
Joined
Apr 24, 2011
Messages
63
Can you count?

How many leads does it have?

Can you measure it?

what size is the black epoxy part?

Are the legs all on one side?

Does it have a tab?

There is very little we can do is a vacuum!
about 4mm x2.5mm A picture may help
 

Attachments

  • thumbnail.jpg
    thumbnail.jpg
    1.2 KB · Views: 204

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
OK, it's a diode. (99% chance based on the stated manufacturer(s) and package)

Unfortunately I am away from my datasheets etc right now so I can't look it up.

The ZMV833ATA seems unlikely as the closest package it comes in is a SOD-23 which is about 1.1 x 0.7 mm and it's a varicap diode which I would not expect to see on a disk drive.

I'll try to remember to look this up later (but with the information you have provided, someone may well beat me to it).
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Could it be this package?

In this package there are a number of TVS diodes rated for 5V working voltage.

Check to see if this diode is across the 5V rail. If so, it is there to absorb spikes on the 5V rail.

Some examples are SMAJ5.0A, P4SMA6.8A, P4SMAJ5.0AC, etc.

The first of these devices in a STMicroelectronics device. See here.
 

rambo99

Apr 24, 2011
63
Joined
Apr 24, 2011
Messages
63
Could it be this package?

In this package there are a number of TVS diodes rated for 5V working voltage.

Check to see if this diode is across the 5V rail. If so, it is there to absorb spikes on the 5V rail.

Some examples are SMAJ5.0A, P4SMA6.8A, P4SMAJ5.0AC, etc.

The first of these devices in a STMicroelectronics device. See here.
yes this is the right one and I will order that part
 
Top