View rn1707je-rn1709je datasheet:

RN1707JE~RN1709JE TOSHIBA Transistor Silicon NPN Epitaxial Type (PCT Process) (Bias Resistor Built-in Transistor) RN1707JE,RN1708JE,RN1709JE Switching, Inverter Circuit, Interface Circuit and Unit: mm Driver Circuit Applications • Two devices are incorporated into an Extreme-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. • A wide range of resistor values is available to use in various circuit designs. • Complementary to RN2707JE~RN2709JE Equivalent Circuit and Bias Resistor Values 1.BASE1 (B1) 2.EMITTER (E) 3.BASE2 (B2) C Type No. R1 (k?) R2 (k?) 4.COLLECTOR2 (C2) 5.COLLECTOR1 (C1) R