please id IC 6X=4X & Z3 3K

[karlox]

Hello! good day can you help me to identify this pair of IC'S ?

IC 6X=4X

IC Z3 3K

[mon2]

Re: please id IC 6X=4X & Z3 3K

If there is an '=' in the part number, then it is by Richtek.

Searching 'Richtek 6x=' on Google resulted in the attached. The values after the '=' are the date codes.

Z3 is also from Richtek.

[karlox]

Re: please id IC 6X=4X & Z3 3K

If there is an '=' in the part number, then it is by Richtek.

Searching 'Richtek 6x=' on Google resulted in the attached. The values after the '=' are the date codes.

thank you, can you correct me? the Z3 3K is RT8237C

[mon2]

Re: please id IC 6X=4X & Z3 3K

Yes. Note that 3K = manufacturer date code. The 3K does not need to match.

https://a.aliexpress.com/_mLV5VNG

[karlox]

Re: please id IC 6X=4X & Z3 3K

Yes. Note that 3K = manufacturer date code. The 3K does not need to match.

https://a.aliexpress.com/_mLV5VNG

Thank you, thank you for taking the time... Regards