Dual NPN pre-biased transistor in a compact SOT-563 package
The ROHM Semiconductor EMH9T2R integrates two NPN pre-biased transistors in a single SOT-563 / SOT-666 package, each with a 10 kΩ base resistor (R1) and a 47 kΩ base-emitter resistor (R2). The 150 mW power dissipation limit per package sets the thermal budget for both channels combined.
Sizing the load: 50 V and 100 mA limits
The 300 mV saturation voltage at 250 µA base drive and 5 mA collector current gives a low on-state drop for logic-level loads.
Package and footprint for dense layouts
The SOT-563 / SOT-666 package (EMT6 supplier device package) is an ultra-small, 6-lead surface-mount package. The 0.5 mm lead pitch and compact body suit space-constrained designs such as portable electronics, sensor modules, and multi-channel I/O blocks.