Identifying SMD transistors

[saint gillis]

I've browsed the forum about that subject, apologies if it was already discussed, but I didn't find..
I've been faced several times to this problem, is there a way to identify an SMD transistor with the markings on it ?

Here's some practical homework, 4 transistors, all seem to have this pinout (from left to right) : B - C - E

This NPN is labeled "MIL z" (or "M1L z") :


This PNP is labeled "C2 M" :


This NPN is labeled "CKB" :


This NPN is labeled "1AM 2" (with a horizontal "2") :



Is there any way to identify them, and if yes, what would be the method ?

 

[saint gillis]

Well first of all the most important seems to read correctly the markings, it's not "C2M" , it's "C2W", and yes google was my friend :
https://www.mouser.com/datasheet/2/68/cmpt8099_268599-370567.pdf

 

[saint gillis]

"1AM" seems to be MMBT3904L
and "M1L" seems to be MMBT6429LT1

Is there any way to be mistaken?

 

[Khron]

This is far from the most comprehensive list, but it's a starting point for the more "pedestrian" stuff.

https://www.s-manuals.com/smd