The Infineon BCR108SE6433HTMA1 is a dual NPN pre-biased transistor array in a 6-pin SOT-363 package. Each transistor integrates a 2.2 kΩ base resistor and a 47 kΩ emitter-base resistor, eliminating the need for external bias components in switching applications. With a 50 V collector-emitter breakdown voltage and 100 mA maximum collector current, it is sized for low-current loads like relay coils, LED indicators, and logic-level interface circuits. The 170 MHz transition frequency keeps switching edges clean for digital signals up to a few MHz.
Obsolete — sourcing reality
This part carries an Obsolete lifecycle status, meaning Infineon has ended production. For existing BOM lines, the only channel is independent distribution — surplus inventory, new-old-stock, or broker-sourced material.
250 mW ceiling and saturation behaviour
Total power dissipation is rated at 250 mW for the dual package. With both transistors conducting, each channel's share depends on duty cycle and ambient temperature — the SOT-363 footprint offers limited copper area for heat spreading.