Active production, AEC-Q101 qualified
The RN2106MFV,L3XHF(CT: That means it is released for automotive-grade builds and is not a short-life or NRND part — no last-time-buy pressure on this BOM line.
Built-in bias resistors simplify the BOM
This PNP pre-biased transistor integrates a 4.7 kΩ base resistor (R1) and a 47 kΩ emitter-base resistor (R2). The bias network is on-chip, so you save one or two passives per position and shrink the placement footprint.
SOT-723 (VESM) — small, but layout-aware
The SOT-723 package, also called VESM, is a small body with a tight lead pitch. It is one of the smallest packages for a pre-biased transistor. The land pattern is tight — confirm the solder-paste aperture and stencil thickness for a reliable fillet. The 150 mW power limit means the thermal path is through the collector pad; keep the copper pour generous under the part.
Switching performance and saturation
With a 250 MHz transition frequency and a Vce(sat) of 300 mV at 500 µA base, 5 mA collector, this transistor handles low-current switching up into the MHz range. The DC current gain minimum of 80 at 10 mA, 5 V gives a solid drive margin for logic-level loads.