The Infineon BC846SE6433BTMA1 is a dual NPN general-purpose transistor in a single SOT-363 package (PG-SOT363-PO). It integrates two matched NPN devices rated for 65 V collector-emitter breakdown, 100 mA continuous collector current, and a transition frequency of 250 MHz. The dual-transistor configuration saves board space and simplifies layout for differential amplifiers, current mirrors, or signal pre-amplifier stages in industrial controls, sensor interfaces, and low-power switching circuits.
Any BOM using this exact order code should be qualified against an equivalent dual NPN in SOT-363 before committing to a new build.
Key ratings for the design decision
The 65 V VCEO breakdown and 250 MHz fT suit rail-level signal conditioning and low-frequency switching. The 100 mA collector current limit and 250 mW package power dissipation cap define the load budget.
Package and footprint reality for replacement
The supplier device package is PG-SOT363-PO, which is the Infineon designation for a standard SOT-363 6-lead footprint. Any replacement must match the SOT-363 land pattern.