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enter image description here

I want to know what this IC is and its manufacturer name. It will be useful if you also let me know how you found the datsheet.

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    \$\begingroup\$ Did you try the Google image search? Many have had success with that. \$\endgroup\$
    – Solar Mike
    Jun 11, 2023 at 6:20
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    \$\begingroup\$ To invite useful answers here, disclose the purpose of the board. (looks protection measures from water/humidity?) \$\endgroup\$
    – greybeard
    Jun 11, 2023 at 6:36
  • \$\begingroup\$ Thankyou so much \$\endgroup\$
    – Resist Cap
    Jun 11, 2023 at 13:02

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It's a Giantec GT25C128A EEPROM. enter image description here

The markings don't match exactly, but are very close. I suspect it's the automotive grade version, but I can't confirm since there is no part number shown on the website. Edit: It looks like the automotive version has a "B" instead of "A". The datasheet says there are custom package option available on request:

enter image description here

So I suspect it's in a custom package with the designator "3GX".

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  • \$\begingroup\$ Thank you bro ..you are doing a great work..! and again how did you find this datasheet 😁😁 \$\endgroup\$
    – Resist Cap
    Jun 11, 2023 at 13:05
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    \$\begingroup\$ @GaneshThiva This one was tricky. After a search for the markings code turned up nothing. I looked up IC logo databases to search for the manufacturer, but couldn't find any match. Since it didn't seem to be one of the bigger western brands, I looked on lcsc.com/supplier for manufacturers with a name that could be abbreviated as GT or CT. After looking at quite a few, I finally found Giantec with a matching logo. Then I searched their homepage for a part that matches the markings code. \$\endgroup\$
    – nanash1
    Jun 11, 2023 at 14:03
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    \$\begingroup\$ What seems strange to me is that this relies on it being a custom package code, but SOIC is one of the standard packages with a standard code. I wonder if it's just a different pinout or something.... \$\endgroup\$
    – Hearth
    Jun 11, 2023 at 14:41

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