NPN transistor in SOT-23-3 — 45 V, 500 mA, 170 MHz
The BC 817-16 B5003 is an NPN bipolar transistor in a three-lead SOT-23-3 surface-mount package. It handles a collector-emitter breakdown voltage of 45 V and a continuous collector current of 500 mA, with a transition frequency of 170 MHz. The DC current gain (hFE) is a minimum of 100 at 100 mA collector current with 1 V Vce. Maximum saturation voltage is 700 mV at 50 mA base drive and 500 mA collector current.
Power dissipation and thermal limits
Maximum power dissipation is 330 mW. The junction temperature rating is 150 °C. In a SOT-23-3 package, the thermal resistance is set by the copper area on the collector pad — keep the trace short and wide to pull heat out of the die.
Obsolete — sourcing through independent distribution
The BC 817-16 B5003 carries an Obsolete product status. No official successor part is listed on the lifecycle record. Sourcing is through independent distribution channels. The SOT-23-3 package is standard and the base part number BC 817 remains available in other gain groupings — but this exact suffix is end-of-life stock only.