5 PIECES NEW OLD STOCK VINTAGE TRANSISTORS LIKE SHOWN 2N3645 may be Fairchild or SGS ?, not marked but were in with other that were marked. *from websearch: SGS were Italian, Societa Generale Semiconduttori, they licensed technology from Fairchild. Subsequently merged with ATES, whose origin was an Italian government operation to make components for the State run telephone company. SGS-ATES subsequently got associated with the French Thomson-CSF. WE COMBINE SHIPPING SO SELECT THE QTY YOU NEED AND THEN CLICK ON SHIPPING OPTIONS. QTY1= 5PCS QTY 2= 10 PCS ETC.