PNP pre-biased transistor for automotive load switching
The Infineon BCR191WE6327 is a PNP pre-biased digital transistor in a SC-70 / SOT-323 package, designed for switching loads in automotive and industrial applications where board space is tight. The integrated bias resistors (R1 = 22 kOhms, R2 = 22 kOhms) eliminate two external resistors, simplifying PCB layout and reducing component count. Rated for 50 V collector-emitter breakdown and 100 mA continuous collector current, it handles common automotive loads like relay drivers, solenoid drivers, and logic-level interface circuits. The 200 MHz transition frequency means it switches cleanly in low-speed PWM or digital on/off applications without excessive switching loss.
AEC-Q101 qualification — built for automotive reliability
This part carries AEC-Q101 qualification, the automotive stress-test standard for discrete semiconductors. That means it has passed rigorous temperature cycling, high-temperature reverse bias, and humidity tests specified for under-hood and chassis-mounted electronics. The Automotive grade confirms the operating temperature range and reliability targets align with OEM requirements for engine control units, body controllers, and transmission modules. For a design targeting automotive PPAP, this qualification is a checkbox item — the BCR191WE6327 already meets it.
250 mW power dissipation in a small SMD package
Maximum power dissipation is 250 mW in the SC-70/SOT-323 package.
The base product number BCR191 covers a family of pre-biased transistors, so if a different resistor ratio or package variant is needed, the family provides drop-in alternatives without requalification.