help identifying SMD transistor like devices

[3n2323]

i took some SMD transistor like devices off a board of some broken VCR's, the markings on them were originally blacked out, removing of black paint on top of them revealed these:

ZS (on most of them)
BS (on a few)
BQ (on one or two)

just two letters, other than those two letters, there seems to be no room for any other markings.

they all have 3 pins, 2 on one side, 1 on the opposite side. i suspect they are BJT's, but not sure.

please help me identify them, what they are, and what kind they are, so that i could try find their
corresponding datasheets. thank you!

 

[art666]

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

 

[DeepOne]

May be this can help

otherwise, the "AVR-Transistortester" from Markus F. is very suitable.

 

[khankll]

try to ideftify if they are bjt transistors by using diode test .. if these are transistors u can identify if its pnp or npn and also its legs and u can also get its beta ..

 

[3n2323]

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

thank you art666, most helpful!

---------- Post added at 00:30 ---------- Previous post was at 00:21 ----------

May be this can help
...
otherwise, the "AVR-Transistortester" from Markus F. is very suitable.

thank you DeepOne for info directly pointed to my questions, thank you very much!

---------- Post added at 00:31 ---------- Previous post was at 00:30 ----------

try to ideftify if they are bjt transistors by using diode test .. if these are transistors u can identify if its pnp or npn and also its legs and u can also get its beta ..

thank you khankll, most helpful!

 

[tgotwalt1158]

I saw your request lately but in case if you are still looking for, you may find this useful :

BS BCW61DR Phi R SOT23 BCY78-x
BS BZX399C22 Phi I SOD323 22V 0.3W zener
BS 2PB709AS Phi N SC-59 pnp 45V 0.1A hfe 290-460

BQ BZX399C18 Phi I SOD323 18V 0.3W zener in SOD323
BQ 2PB709AQ Phi N SC-59 PNP 45V 0.1A hfe 160-260

ZS BZX284-C43 Phi I SOD110 0.4W zener 43V ±5%
ZS PDZ30B Phi I SOD323 30V 0.4W zener