BD679A NPN Darlington Transistor 80V 4A 40W TO-126

Description

BD679A NPN Darlington Transistor 80V 4A 40W TO-126 The BD679A is a monolithic NPN Darlington power transistor in a TO-126 (SOT-32) style package, engineered for high-gain amplification and robust switching in industrial and consumer power circuits, with integrated antiparallel diode and planar base-island technology for reliable thermal and electrical performance. Features NPN monolithic Darlington configuration with integrated antiparallel collector-emitter diode for robust switching performance. High DC current gain enabling reduced base drive requirements. Collector-emitter sustaining voltage rated for 80V for BD679A family members. Continuous collector current of 4A with 6A peak capability for transient loads. Total power dissipation of 40W at T case =25°C for thermal-managed applications. Low saturation voltages under rated drive (V CE(sat) typ. up to 2.8V at I C =2A, I B =40mA). Wide operating junction temperature up to 150°C for demanding environments. Specifications Absolute Maximum Ratings Symbol Parameter Value Unit V CBO Collector-base voltage (I E = 0) 80 V V CEO Collector-emitter voltage (I B = 0) 80 V V EBO Emitter-base voltage (I C = 0) 5 V I C Collector current 4 A I CM Collector peak current 6 A I B Base current 0.1 A P TOT Total dissipation at T case = 25°C 40 W T stg Storage temperature -65 to 150 °C T J Max. operating junction temperature 150 °C For full electrical specifications, check the datasheet down below. Applications Linear regulator stages and medium-power amplifier circuits requiring high current gain. General purpose power switching in industrial control, motor drivers, and relay drivers. Audio amplifier output stages and consumer electronics with thermal management. Prototyping and replacement in TO-126 power transistor footprints. Package Contents 1x BD679A NPN Darlington Transistor TO-126. Documents Datasheet BD679A CAD Files Download

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