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İ want use arduino for power supply with 5 v if you have fjn3303 i can buy from you with ebay

hello everybody. i have two questions. 1. i want to use geiger board with arduino. So do i have to use attiny 2313, is there any problem when connect TP1 pin to arduino directly. http://i59.tinypic.com/29xutky.png 2. I couldn't find fjn3303f transistor. Is there any transistor which using fjn3303n p...