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 Post subject: WD5000AAKS TVS Diode fixing
PostPosted: May 22nd, 2010, 2:55 
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Joined: May 22nd, 2010, 2:02
Posts: 4
Location: teharn
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?


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: May 22nd, 2010, 3:27 
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Joined: December 16th, 2007, 10:26
Posts: 1151
hi,
yeah. you can. or you can just remote it only.

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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: May 22nd, 2010, 3:42 
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Joined: May 22nd, 2010, 2:02
Posts: 4
Location: teharn
ok
what do you mean?
which diode can I change with


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: May 22nd, 2010, 15:33 
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Joined: February 27th, 2009, 3:26
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Location: French Polynesia Tahiti
You can remove it but note your HDD will not be protected. Remove and get off data on HDD

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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: May 23rd, 2010, 3:43 
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Joined: September 8th, 2009, 18:21
Posts: 16963
Location: Australia
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.


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: May 29th, 2010, 9:05 
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Joined: May 22nd, 2010, 2:02
Posts: 4
Location: teharn
Thank you very much.
I'll do that.I hope I can fix it.


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: June 9th, 2010, 21:39 
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Joined: June 9th, 2010, 21:29
Posts: 2
Location: United States
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.


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: June 10th, 2010, 6:03 
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Joined: September 8th, 2009, 18:21
Posts: 16963
Location: Australia
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.


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: June 10th, 2010, 15:49 
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Joined: August 15th, 2006, 3:01
Posts: 3522
Location: CDRLabs @ Chandigarh [ India ]
fzabkar wrote:
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

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com


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 Post subject: Re: WD5000AAKS TVS Diode fixing
PostPosted: June 11th, 2010, 22:34 
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Joined: June 9th, 2010, 21:29
Posts: 2
Location: United States
Thanks again fzabkar!


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