Dual PNP pair in a single SOT-363
The Infineon BC 856S E6433 integrates two matched PNP transistors in a single 6-pin SOT-363 package.
Gain and saturation — what the numbers mean
DC current gain (hFE) is guaranteed at a minimum of 200 at Ic = 2 mA and Vce = 5 V, which provides a predictable beta floor for biasing. The Vce(sat) is specified at 650 mV maximum at Ib = 5 mA and Ic = 100 mA — a typical figure for a small-signal PNP in saturation, useful when the transistor is used as a low-side switch or in a saturated output stage. Transition frequency is 250 MHz, making this pair suitable for switching and amplification up to the low-VHF range. Collector cutoff current is a maximum of 15 nA (ICBO), which keeps leakage negligible in high-impedance nodes.
The SOT-363 (PG-SOT363-PO) package is a 6-lead surface-mount outline with a 250 mW total power dissipation limit.