2N4922

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Medium-power NPN silicon planar power transistor housed in a plastic TO-225AA (TO-126) package with a rear metal cooling tab, engineered to deliver linear current gain in consumer and industrial voltage regulators. Equivalents: 2N4921, TIP31, BD139, NTE184. Real-Life Examples: Automotive electronic system controllers, continuous-duty industrial relay/solenoid triggers, and high-fidelity audio output stages. Show more