2N5551 – NPN Bipolar Junction Transistor The 2N5551 is a high-voltage, low-current NPN bipolar junction transistor designed for general-purpose amplification and switching applications. It is housed in a compact TO-92 package, making it ideal for through-hole PCB designs where space and thermal constraints are considerations. Engineered to handle collector-emitter voltages up to 160V, the 2N5551 is suitable for use in high-voltage analog circuits, such as audio amplifiers, signal processing stages, and voltage regulation systems. It delivers a continuous collector current of up to 600 mA and exhibits a DC current gain (hFE) in the range of 30 to 300, depending on the operating current and temperature conditions. Key Features: High voltage handling: Vce = 160V Moderate collector current: Ic = 600 mA Wide DC current gain range Low saturation voltage for efficient switching Complementary to 2N5401 (PNP type) Standard TO-92 package Applications: Signal and audio amplifiers High-voltage switching circuits Voltage regulator circuits General-purpose transistor for industrial and consumer electronics Package Type: TO-92 (Plastic Through-Hole)
