TYPE:MMBT5551POLARITY:NPNBVCBO(V) 180BVCEO(V) 160BVEBO(V) 6 FEATURESomplementary to MMBT5401Ideal for Medium Power Amplification and Switching Tel:0769-81837972 Fax:0769-81837971 E-mail:nanjing@gdnjdz.com