Transistor alternative

[bluelight]

I am working on a project (http://www.jameco.com/Jameco/Products/ProdDS/2126272 Schematic.pdf) that uses Transistor General Purpose BJT NPN 40 Volt 0.2 Amp 3-Pin TO-92 transistors and I think I might have blown them with my 40w soldering iron, so I am going to stop at Fry's Electronics today to get new transistors. The transistors recommend are NTE 123AP TRANSISTOR NPN-SILICON 75V 0.6 AMP TO-92 CASE AUDIO AMP/SWITCH transistors. Can I use these transistors or do I need to order the exact same ones from Jameco?

Fairchild transistor: http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_178597_-1
NTE transistor: http://www.frys.com/product/1799095?site=sr:SEARCH:MAIN_RSLT_PG

 

[Colin Mitchell]

Any transistor can be used BC547 BC338 2N2222A . . . . any junk NPN transistor

 

[(*steve*)]

There are many transistors you could use:

BC548
2N2222
2N3904
etc., etc.

All you want is an NPN BJT capable of 50mA or more of collector current and able to operate at 20V or more. There are so many th choose from.

Just make sure you know the correct pinout!

 

[KrisBlueNZ]