KEC Group
BC557B
PNP Bipolar Junction Transistor (BJT) for general-purpose applications. Features a 45V collector-emitter voltage and 0.1A continuous collector current. Housed in a 3-pin TO-92 plastic package with formed leads for through-hole mounting. Offers a minimum DC current gain of 200 at 2mA and 5V, with a typical transition frequency of 150MHz. Operates across a wide temperature range from -55°C to 150°C.
BC558B
PNP Bipolar Junction Transistor (BJT) for general-purpose applications. Features a 30V collector-emitter voltage and 0.1A maximum collector current. This single-element transistor is housed in a 3-pin TO-92 plastic package with formed leads, suitable for through-hole mounting. It offers a minimum DC current gain of 200 at 2mA/5V and a typical transition frequency of 150MHz. Operating temperature range spans from -55°C to 150°C.
MMBTA06
This device is a general-purpose NPN bipolar transistor in a SOT-23 surface-mount package. KEC lists a collector-emitter voltage rating of 80 V, continuous collector current of 0.5 A, and power dissipation of 0.35 W. The product page specifies a minimum DC current gain of 100 and a maximum collector-emitter saturation voltage of 0.25 V. Ordering information on the manufacturer site shows reel packaging with 3,000 pieces for listed orderable variants.