Can somebody explane notation in schematics

[JoSta]

I have been checking schematics for my motherboard and have difficulties to understand it. I figured that i need to replace the component designated with PQB03 on the board. In the schematics I find two entries with different components, although they have almost similar specs. I could not find an explanation for the prefixes "G1G3@" or "G2@"
Can somebody help me?

[m1ch43lzm]

Usually the @ means "optional", "no stuff", or "option", as in alternate part number, depends on board manufacturer (Quanta, Compal, LCFC, inventec, Wistron, ...) and the context of the schematics

In your case it seems that PQB03 is AON7380, and the alternate part is AON7506, stick with the AON7380 as it has better specs (Id=24A vs 12A on the AON7506)
Check also the part number on the original MOSFET from your board, sometimes the schematics list one part, but the production board has a different part installed from factory

[truclacicr]

I suspect that G1, G2 and G3 refer to the Generation of the processor (or laptop?).

[m1ch43lzm]

Please post a link to the schematics to check (from the Schematics request sub forum)
Maybe the same laptop but with discrete/integrated graphics variants?

[JoSta]

Ok thank you very much for your answers, that helps! For the schematics see the attached document. I actually found it somewhere else on the internet because I could not download the one from this post here.

I have the Omen 15 with mainboard FPC54 LA-H482P Rev1.0. The document seems to be relevant for a few other models as well, so truclacicr might have a point.

[m1ch43lzm]

Please attach the schematics to the other thread, to keep the forum organized, there were some issues with the forum recently and some files were lost
https://www.badcaps.net/forum/troubl...ew#post3574939

Now i think I know what that G3@ means, it's different BOM option (bill of materials), depends on the GPU variant for that board

Those MOSFETs go in parallel to PQB01 and PQB03, depending on variant

[truclacicr]

https://h30434.www3.hp.com/t5/Notebo...n/td-p/6933853

The G stands for Generation.

The Elitebook 850 G1 for example, has the Intel 4th gen core processor series.

The G2, has the Intel 5th gen core processor series.

The G3 has the Intel 6th gen core processor series.

The G4 has the Intel 7th gen core processor series.

...and so on.

[JoSta]

Please attach the schematics to the other thread, to keep the forum organized, there were some issues with the forum recently and some files were lost
https://www.badcaps.net/forum/troubl...ew#post3574939

Now i think I know what that G3@ means, it's different BOM option (bill of materials), depends on the GPU variant for that board

Those MOSFETs go in parallel to PQB01 and PQB03, depending on variant

Ok, that doesnt really effect me if want to replace PQB03, does it? I can still use AON7380 to replace the MOSFET on the board?

[m1ch43lzm]

Best to use the same type on both PQB03 and PQB7, since both are in parallel and the current would be equally split between the 2 MOSFETs
Otherwise more current will go through the MOSFET with lower Rds(on) (Kirchoff law of electronics, like 2 resistors in parallel)