View rn47a2 datasheet:

RN47A2 TOSHIBA Transistor Silicon NPN·PNP Epitaxial Type (PCT process) (Bias Resistor built-in Transistor) RN47A2 Switching, Inverter Circuit, Interface Circuit and Unit: mm Driver Circuit Applications. • Two devices are incorporated into an Ultra-Super-Mini (5 pin) package. • Incorporating a bias resistor into a transistor reduces parts count. Reducing the parts count enables the manufacture of ever more compact equipment and lowers assembly cost. Equivalent Circuit and Bias Resistor Values Q1 Q2 C C R1 R1 B B JEDEC ? E E JEITA ? R1: 22 k? (Q1, Q2 common) TOSHIBA 2-2L1D R2: 22 k? (Q1, Q2 common) Weight:0.0062g (typ.) Q1: RN1103F Q2: RN2103F Marking Equivalent Circuit (top view) 5 4 5 4 Q2 2 2 Q1 1 2 3 1 2 3 1 2004-04-28 R2 R2 R