DESCRIPTION NPN transistor in a SOT23 plastic package. PNP complements: BCW69 and BCW70. MARKING TYPE NUMBER BCW71 BCW72 MARKING CODE(1) K1∗ K2∗ Note 1. ∗ = p : Made in Hong Kong. ∗ = t : Made in Malaysia. handbook, halfpage 3 1 Top view 1 2 MAM255 3 2 Fig.1 Simplified outline (SOT23) and.