Links:
[1] http://www.samsvojmajstor.com/portal/forums/uradi-sam/elektronika/tranzistor-2sa1643#comment-390565
[2] http://www.samsvojmajstor.com/portal/users/carlos
[3] http://english.electronica-pt.com/db/cross-reference.php?ref=2SA&page=69
[4] http://www.podsvojostreho.net/adserver/www/images/4dbf1ead7af8027758dbc3fa41f6c916.gif
[5] http://www.samsvojmajstor.com/portal/forums/uradi-sam/elektronika
http://english.electronica-pt.com/db/cross-reference.php?ref=2SA&page=69 [3]
[4]