2 1 DESCRIPTION NPN Darlington transistor in a TO-92; SOT54 plastic package. PNP complement: MPSA64. 1 2 3 TR1 TR2 MAM252 3 Fig.1 Simplified outline (TO-92; SOT54) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VCBO VCES VEBO IC ICM IB P.