Pre-biased PNP in a 3-pin SOT-723
The Infineon BCR 158F E6327 is a PNP pre-biased transistor — it integrates the bias resistors (R1 of 2.2 kOhms and R2 of 47 kOhms) directly into the SOT-723 package, eliminating two external passives from the BOM. This saves board area in high-density designs where a simple switching or inverting function is needed. The part is rated for a collector-emitter breakdown voltage of 50 V and a continuous collector current of 100 mA, with a maximum power dissipation of 250 mW. Its transition frequency of 200 MHz suits low-speed switching and interface-level translation up to a few megahertz.
Obsolete — sourcing path
Infineon lists the BCR 158F as obsolete. For BOM lines that still require this exact order code, procurement moves to the independent distribution market — surplus inventory, new-old-stock, or verified broker lots.
