BC557 PNP General Purpose Transistor

<p>The <strong>BC557</strong> is a general-purpose PNP bipolar junction transistor (BJT) designed for use in switching and amplification applications. Its compact size and reliable performance make it ideal for low-power circuits, audio applications, and signal amplification.</p> <h3>Key Features:</h3> <ul> <li><strong>Type</strong>: PNP Bipolar Junction Transistor (BJT)</li> <li><strong>Voltage Ratings</strong>: <ul> <li>Collector-Emitter Voltage (V_CE): 45V</li> <li>Collector-Base Voltage (V_CBO): 50V</li> <li>Emitter-Base Voltage (V_EBO): 5V</li> </ul> </li> <li><strong>Current Ratings</strong>: <ul> <li>Collector Current (I_C): 100mA</li> </ul> </li> <li><strong>Gain (h_FE)</strong>: 110 to 800</li> <li><strong>Package Type</strong>: TO-92 (Plastic)</li> </ul> <h3>Applications:</h3> <ul> <li>Signal amplification</li> <li>Audio and voltage amplifier circuits</li> <li>Switching low-power loads</li> <li>General-purpose electronics projects</li> </ul> <h3>Pin Configuration:</h3> <ol> <li><strong>Emitter (E)</strong> – Connected to the negative side of the circuit</li> <li><strong>Base (B)</strong> – Controls the transistor's operation</li> <li><strong>Collector (C)</strong> – Connected to the load</li> </ol> <p>The <strong>BC557</strong> is a reliable PNP transistor used for medium and low-power switching and amplification applications. It's ideal for hobbyists, students, and professionals working with analog circuits and low-power electronics.</p>