View rn2901fs-2906fs h0-1-2-3-4-5 fs6 datasheet:

RN2901FS~RN2906FS TOSHIBA Transistor Silicon PNP Epitaxial Type (PCT process) (Bias Resistor built-in Transistor) RN2901FS,RN2902FS,RN2903FS RN2904FS,RN2905FS,RN2906FS Switching, Inverter Circuit, Interface Circuit and Unit: mm Driver Circuit Applications 1.0±0.05 0.8±0.05 0.1±0.05 0.1±0.05 • Two devices are incorporated into a fine pitch Small Mold (6 pin) package. 1 6 • Incorporating a bias resistor into a transistor reduces parts count. 5 2 Reducing the parts count enable the manufacture of ever more compact equipment and save assembly cost. 4 3 • Complementary to RN1901FS~RN1906FS Equivalent Circuit and Bias Resistor Values 1.EMITTER1 (E1) 2.BASE1 (B1) 3.COLLECTOR2 (C2) C 4.EMITTER2 (E2) Type No. R1 (k?) R2 (k?) 5.BASE2 (B2) 6.COLLECTOR1