WD5000AAKS TVS Diode fixing

[msh959]

Hi everyone!
I have a WD hard disk and it doesn't work because the TVS diode (D3) was burnt and I want to change it.
Can I change it with other diode?

[networkpc3000]

hi,
yeah. you can. or you can just remote it only.

[msh959]

ok
what do you mean?
which diode can I change with

[poehere]

You can remove it but note your HDD will not be protected. Remove and get off data on HDD

[fzabkar]

You can replace a 12V TVS diode with an SMBJ12A, and a 5V TVS diode with an SMAJ5.0A. Both are available from Farnell, Mouser, Digikey.

There may also be an open zero ohm resistor next to the diode.

If you can upload a detailed photo, one of us will help you identify it.

[msh959]

Thank you very much.
I'll do that.I hope I can fix it.

[sychial]

Hey, I have a Seagate ST35000320AS drive that needs the SMAJ5.0A TVS Diode. Now I see a ton of different types with different end codes like TR, CA etc and I'm not sure if this is a big deal or I need to be more precise. I found a SMAJ5.0A-TR from digikey, would this be sufficient? http://parts.digikey.com/1/parts/149636 ... 0a-tr.html

Oh and thanks a lot fzabkar! The info you've given on the seagate forums got me this far. Desoddered the diode and the drive powered on great! Now it's time to permafix it.

[fzabkar]

Here is the datasheet for the SMAJ5.0A diode:
http://www.st.com/stonline/products/lit ... 4/smaj.pdf

See page 6 for information on part number nomenclature.

You need the "A" (Unidirectional) part.

The "TR" suffix denotes Tape and Reel. This only matters if you're ordering a big quantity for a production line.

The SMAJ5.0A-TR from Digikey is the one you want.

Just be sure to line up the polarity stripe with the "v" on the Seagate PCB.

[Amarbir[CDR-Labs]]

Here is the datasheet for the SMAJ5.0A diode:
http://www.st.com/stonline/products/lit ... 4/smaj.pdf

See page 6 for information on part number nomenclature.

You need the "A" (Unidirectional) part.

The "TR" suffix denotes Tape and Reel. This only matters if you're ordering a big quantity for a production line.

The SMAJ5.0A-TR from Digikey is the one you want.

Just be sure to line up the polarity stripe with the "v" on the Seagate PCB.

Hi ,
You Always Give Excellent Advice,Good Work As Usual

[sychial]

Thanks again fzabkar!