Danial, > dunno.. I got loads of 2SC945, 2SC1815 , BC548 [all can be used for > equivalents by the way], dont see 2N3904 around too often.. goto RS/Farnell or Rapid.. they have BUCKET loads of them... I bought 100 2n3904 of about 2UKP... They're REALLY common, hell maplin even still carry them! Paul