Please help me identify this chip! It is square and 3mm in length, composed of 2 layer white ceramic. It has 9 golden pads. I think it's either a Hittite Microwave Corporation product or an Analog Devices product, but I was unable to pinpoint it.



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    \$\begingroup\$ Since Analog Devices has bought Hittite, not much info going on there. \$\endgroup\$ Feb 21, 2020 at 23:25
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    \$\begingroup\$ I removed the "digital logic" tag, since you weren't mentioning digital logic in your question. \$\endgroup\$ Feb 21, 2020 at 23:27
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    \$\begingroup\$ @Grosan - Hi, FYI these are the current "Component Identification Question Guidelines". The more information you can supply from that list, the better the chances of identification. Please edit your question to add any additional information; don't write it as a comment (or as an answer). Also see the tour and help center for more information about Stack Exchange sites, their rules, and the differences between them and typical internet forums. Thanks! \$\endgroup\$
    – SamGibson
    Feb 21, 2020 at 23:42
  • \$\begingroup\$ All right. Thank You all. \$\endgroup\$ Feb 22, 2020 at 6:17

1 Answer 1


It appears to be an "NBB-312 Cascadable Broadband GaAs MMIC Amplifier DC to 12GHz" made by RFMD (recently acquired by qorvo). Nice looking part, about $10 in 100's.

enter image description here

Goodness knows what led them to mark it with reversible characters, no underline, and pin 1 in the upper right. Maybe that's an MMIC thing. Also note, it's not a BGA (no balls at all).

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    \$\begingroup\$ PGA or LGA? looks more like a land grid \$\endgroup\$
    – user16222
    Feb 22, 2020 at 14:31
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    \$\begingroup\$ @JonRB You're right, of course. No pins either. Wonder why they call the package a MPGA. \$\endgroup\$ Feb 22, 2020 at 14:53
  • \$\begingroup\$ Thank you very much! This must be it. Thanks for Your time and for looking into it. BR \$\endgroup\$ Mar 7, 2020 at 7:57
  • \$\begingroup\$ @GrosanSergiu You can (and should) accept the answer if it is the best one and answers your question. \$\endgroup\$ Mar 7, 2020 at 16:24

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