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Electronics: component replacement

specks

New Member
Joined
Feb 27, 2011
Messages
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System Name Spreadsheet powerhouse
Processor Two P4s glued together
Motherboard Asus P5KPL-AM EPU
Cooling CoolerMaster Hyper TX3
Memory 2gb (2x1gb) Kingston Value Ram DDR2 800mhz
Video Card(s) Sapphire HD4670 1gb GDDR3 w/ Arctic Cooling Accelero L7
Storage 500GB Western Digital Caviar Blue
Display(s) Philips 191EL 18.5"
Case Thermaltake V4 Black Edition
Audio Device(s) Onboard
Power Supply Thermaltake TR2 600W
Software WinXp
Hi guys.

I've been gone for quite a while as I'm in college right now but it's great to be back.

I already made a 12V regulated PSU w/ current booster and a 19W bridge type amplifier w/ an LA4440 chip. I will now be a pre-amp circuit using 2 BC109C transistors. My instructor told us to find a TO-92 replacement for the said transistor. Will the following be okay as a substitute?
•2N3904
•BC549

Please give me sone more possible replacements.

Thanks.
 
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