The Infineon BCR198WE6327BTSA1 is a PNP pre-biased transistor — a single device that integrates a bipolar transistor with two 47 kOhm resistors (R1 base, R2 emitter-base) in an SC-70 (SOT-323) surface-mount package. The built-in bias network reduces external component count and board area in switching and interface applications where a PNP transistor with a defined base bias is needed. The 250 mW power dissipation limit in the SC-70 package sets the thermal ceiling — for continuous loads near 100 mA, derate the collector current or duty cycle to stay inside the package's dissipation capability.
Every unit we quote is sourced through our broker network and inspected for marking consistency, date-code traceability, and package integrity before shipment. Because the part is obsolete, the buyer should qualify the replacement or second-source option at the board level. The pre-biased PNP family from Infineon (BCR series) includes many pin-compatible variants with different resistor ratios; a cross-reference search against the 47 kOhm / 47 kOhm divider is the first step if a direct drop-in substitute is needed.