I have tried searching multiple sites such as digikey, google, bing, even wikipedia for the data sheets of the following Items but can not find them these components are from a seagate barracuda.

Diodes (Most likely TVS Diodes)

diode1 diode2

Capacitor (I think)

enter image description here

  • 1
    \$\begingroup\$ At least you have good pictures... \$\endgroup\$ – Connor Wolf Nov 16 '12 at 7:38
  • \$\begingroup\$ @Fake What do you mean by "at least..."? \$\endgroup\$ – linuxrules94 Nov 17 '12 at 2:26
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    \$\begingroup\$ Trying to identify largely non-descript components is a crapshoot at best. We get questions like yours regularly, and you have by far the best pictures I have seen out of any of them. \$\endgroup\$ – Connor Wolf Nov 17 '12 at 5:28
  • \$\begingroup\$ @fake oh thank you I made these photos using a microscope :) \$\endgroup\$ – linuxrules94 Nov 17 '12 at 20:46
  • \$\begingroup\$ I figured that from the indicating pointer in the frame. Some of the scopes at my work have that too. \$\endgroup\$ – Connor Wolf Nov 18 '12 at 6:14

Those look like short code numbers. The full part number doesn't fit on small parts like this, so the manufacturer writes short codes. For example, some MMBT4401 transistors I have are only labeled "2X".

In the datasheet for the part it tells you what variants have what codes, but going the other way is nearly impossible without a pretty good idea what the part already is. If you know the manufacturer you can dig around their datasheets for parts of this class and hope to find one that lists the short code you see.

You might get lucky with some careful google searches using the code you have in quotes, with "SMD code", or "package code", along with "transistor" or whatever you think the device is.



  • \$\begingroup\$ I am pretty sure the diodes are tvs diodes \$\endgroup\$ – linuxrules94 Nov 17 '12 at 2:26
  • \$\begingroup\$ and the bottom looks like a smd polystyrene capacitor \$\endgroup\$ – linuxrules94 Nov 17 '12 at 2:39
  • \$\begingroup\$ maybe I can call Seagate and see what they are... \$\endgroup\$ – linuxrules94 Nov 17 '12 at 2:45
  • \$\begingroup\$ I will research the part list datasheets tomorrow and post what each part is. Thanks Olin :) \$\endgroup\$ – linuxrules94 Nov 17 '12 at 2:53

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