Dual NPN in a small footprint — AEC-Q101 qualified
The BC846UE6727HTSA1 packs two matched NPN transistors into a single SC-74 (SOT-457) package, saving board area versus two discrete SOT-23 devices.
250 MHz fT — switching speed headroom
The 250 MHz transition frequency gives this dual transistor enough bandwidth for gate-drive buffers, level shifters, and low-speed switching converters up to several MHz. The minimum DC current gain of 200 at 2 mA, 5 V ensures consistent drive strength across the batch. Maximum Vce saturation is 600 mV at 5 mA base, 100 mA collector — this sets the conduction loss floor in the on-state. The 15 nA collector cutoff keeps leakage negligible at elevated junction temperatures up to 150 °C.
Last Buy — procurement window is closing
Infineon has classified the BC846UE6727HTSA1 as Last Buy. This means the manufacturer has ceased regular production and is fulfilling final orders through a last-time-buy schedule. Once the LTB window closes, the part will only be available through surplus and broker channels. For new designs or volume production beyond the LTB cutoff, evaluate the standard BC846 family in the same SC-74 package — pin-compatible but without the AEC-Q101 suffix. Confirm the temperature grade and qualification requirements before substituting.
Supplier device package is PG-SC74-6, the Infineon designation for a 6-lead SC-74 (SOT-457) surface-mount package. The 250 mW power dissipation requires attention to the copper pad area under the package for thermal management.