Dual pre-biased pair with integrated bias resistors
The Infineon BCR35PNH6433XTMA1 packs one NPN and one PNP pre-biased transistor in a single SOT-363 package, each with built-in 10kΩ base resistor (R1) and 47kΩ base-emitter resistor (R2). The 50V collector-emitter breakdown and 100mA maximum collector current per transistor cover low-side and high-side switching in 5V and 12V logic-level loads. The 150MHz transition frequency keeps switching edges clean for relay drivers, solenoid coils, and LED strings running below a few hundred kilohertz.
Last Buy — secure inventory now
BCR35PNH6433XTMA1 carries a Last Buy lifecycle status. This is the final ordering window before the part is discontinued. Buyers with active BOM positions should secure their lifetime buy quantity or begin qualifying a replacement.
PG-SOT363-PO: rework and layout notes
The PG-SOT363-PO package is a 6-pin SOT-363 variant with a 0.65mm pin pitch. The small body and low thermal mass (250mW power dissipation limit) mean the part reflows quickly under hot air — keep the nozzle at 300°C and pull the part within 5 seconds of the solder melting to avoid lifting the pad. The 0.65mm pitch is hand-solderable with a fine tip iron, but the small pad area demands a tack-and-reflow approach rather than dragging solder across all six pins.
Built-in resistors simplify the BOM
The pre-biased configuration (R1=10kΩ, R2=47kΩ) eliminates two external resistors per transistor from the BOM. The resistor ratio saturates the output at 300mV max with 10mA collector load.