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Identifying SMD by Code
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fanzam:
I would like help to identify SMD components, may I ask what is the best practice without having access to the schematics.

I was told that there is a book which can translate package factory code to part number however I tried and cannot find any books online.
I have found websites which give examples however did not manage to find my model

Code                     Package                Part No
FAJ **                   ?????                    ????
6BT24                   SOT-23                 BC817-25

Thanks in advance
Mark
tggzzz:
Consider:

* how many different SMD devices exist
* how many different codes are available with that number of characters
* what is the consequence of comparing 1 and 2
Gyro:
Here are a couple of sites, the first one might be the "book" you are talking about...

http://www.marsport.org.uk/smd/mainframe.htm

http://www.s-manuals.com/smd
ataradov:
The small package is SOT-23-5.

I have a few of those PDFs that have some parts listed, but I quite literally never found a single part that I was looking for there.

So the best thing to do is identify the part function and search for something like "SOT-23-5 LDO FA", "SOT-23-5 OpAmp FA", etc.
SiliconWizard:
Finding SMD by marking code is always a bit hit or miss.

But I think it may be this: https://smd.yooneed.one/code4641.html
FAJ
RP170N181B5
Ricoh
SOT-23-5
Linear voltage regulator IC

RP170 series: https://www.e-devices.ricoh.co.jp/en/products/power/vr_ldo/rp170/
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