Automotive-grade PNP transistor in SOT-23-3
The Infineon BC856BE6327 is a PNP general-purpose transistor qualified to AEC-Q101, making it suitable for automotive and other high-reliability environments where device-level stress testing is required. It comes in the standard SOT-23-3 surface-mount package (PG-SOT23-3-1), which fits the common footprint for small-signal transistors used in switching, amplification, and driver stages. Rated for a collector-emitter breakdown voltage of 65 V and a continuous collector current of 100 mA, this part covers the typical 12 V and 24 V automotive rail applications with margin. The 250 MHz transition frequency supports switching speeds needed for gate drive buffers, relay coil drivers, and signal conditioning up to low-MHz ranges. With a DC current gain (hFE) minimum of 220 at 2 mA collector current and 5 V Vce, the BC856BE6327 provides consistent gain for analog stages and ensures reliable saturation in digital switching. The 650 mV Vce saturation at 5 mA base and 100 mA collector keeps on-state losses low in saturated switch applications.
AEC-Q101 and 150 °C junction rating
The AEC-Q101 qualification means this transistor has passed the automotive stress tests: high-temperature reverse bias, temperature cycling, and humidity bias. The maximum junction temperature of 150 °C allows operation in under-hood and engine-adjacent environments where ambient temperatures can exceed 105 °C. The 15 nA maximum collector cutoff current ensures low leakage at elevated temperatures, critical for high-impedance nodes. Lifecycle status is listed as Active, so there is no end-of-life or last-time-buy risk for current or new designs.
SOT-23-3 footprint and MSL handling
The SOT-23-3 package (PG-SOT23-3-1) is the industry-standard three-lead small-signal transistor footprint. Standard moisture sensitivity level (MSL) for SOT-23-3 is typically MSL 1, but confirm the date code's MSL rating from the reel label before reflow; if the part has been exposed to ambient humidity beyond the floor life, a bake-out per J-STD-033 is required to prevent popcorning.