Need advice on equivalent transistors of: SL100 and BC158A

[Jpop]

are there equivalent transistors for SL100 and BC158A? any help is greatly appreciated.

this is the link of the circuit:
http://www.electronic-circuits-diagrams.com/alarmsimages/alarmsckt10.shtml

[hotwaterwizard]

Welcome to uor forum!
1 tiny post deserves an answer. Here are the Datasheets.

SL100 and BC158A

SL100

Click Here For SL100 Datasheet

BC158A

Click Here For BC158A Datasheet

[Jpop]

anyone have any suggestion on the equivalent/substitute for the transistors of SL100 and BC158A? or anything in general on how to find a replacement for the transistors?

[audioguru]

Just about any little transistor will work in that simple circuit.
I would use a 2N3906 to replace the BC158A, and a 2N3904 to replace the SL100.
The American transistors have a reversed pins layout from the Euopean transistors.

[Jpop]

thank u so much   

[HERCULES]

Well, i just came in this forum,,, could any one help me to find a substitute for the SL100, the circuit its a little complex   (An Oscilloscope) and i dont know if that one is the only one that fits in that ciucuit.


thanks

[mvs sarma]

Hi HERCULES
welcome

BC158A cPNP transistorv an be substituted by 2n2907A taking care of the pin differences

SL100 is a medium power device, and if from india, you get CL100, BEL100N

otherwise, you may perhpas try BD115

[HERCULES]

Thank You So much: mvs sarma.. that would be very helpfull. by the way.. i´m making an oscilloscope, i have a basic ciucuit that i´m tring to build.. but, do you or some one know a PC oscilloscope that can be functional...??