2N2243

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Medium-power NPN silicon planar switching and amplification transistor housed in a larger metal TO-39 can, engineered specifically to handle slightly higher current loops and conti nuous operational dissipation than standard small-signal components. Equivalents: 2N2219, BC141, NTE128. Real-Life Examples: Mid-1970s consumer stereo receiver output driver boards, switching power supply feedback regulation loops, and industrial relay actuator controls. Show more