Dual PNP pre-biased — what the built-in resistors buy you
The RN2908FE(TE85L,F) from Toshiba packs two PNP transistors with integrated bias resistors into a single SOT-563 / SOT-666 package. Each transistor has a 22 kΩ base resistor (R1) and a 47 kΩ base-emitter resistor (R2), so you drop the two external resistors per channel that a plain PNP would need. That saves board area and cuts placement cost — useful when you are squeezing a switch or inverter into a tight I/O or sensor-interface block. Collector current is rated 100 mA maximum, with a 50 V collector-emitter breakdown. The 200 MHz transition frequency handles low-speed PWM and digital signalling.
Toshiba lists the RN2908FE as active with a current lifecycle stage. That means no last-time-buy notice is pending, and the part is still in regular production. RoHS compliant per the record.
Package and mounting — SOT-563 / SOT-666, surface-mount only
The part comes in a SOT-563 or SOT-666 case — both are tiny six-lead surface-mount packages. Maximum power dissipation is 100 mW total for both transistors — keep the ambient and board copper in mind if both channels run near the 100 mA ceiling simultaneously.