<https://hk.element14.com/rohm/dtd123ykt146/transistor-digital-sc-59-500ma/dp/1680300>
<http://schema.org/description>
"Digital Transistor Polarity:Single NPN; Collector Emitter Voltage V(br)ceo:50V; Continuous Collector Current Ic:500mA; Base Input Resistor R1:2.2kohm; Base-Emitter Resistor R2:10kohm;"
<https://hk.element14.com/rohm/dtd123ykt146/transistor-digital-sc-59-500ma/dp/1680300>