2sd1511 e.pdf datasheet:

Transistor2SD1511Silicon NPN epitaxial planer type darlingtonUnit: mmFor low-frequency output amplification1.5 0.14.5 0.11.6 0.2FeaturesForward current transfer ratio hFE is designed high, which is ap-propriate to the driver circuit of motors and printer bammer: hFE45= 4000 to 2000.A shunt resistor is omitted from the driver.0.4 0.080.4 0.04Mini Power type package, allowing downsizing of the equipment0.5 0.081.5 0.1and automatic insertion through the tape packing and the maga-3.0 0.15zine packing.3 2 1Absolute Maximum Ratings (Ta=25C)markingParameter Symbol Ratings UnitCollector to base voltage VCBO 100 VCollector to emitter voltage VCEO 80 V1:Base2:Collector EIAJ:SC62Emitter to base voltage VEBO 5 V3:Emitter Mini Power Type PackagePeak collector current ICP 1.5 AMarking symbol : PCollector curr