Diodes Inc. ZTX551 PNP Silicon Planar Medium Power Bipolar Transistor, E-Line

The Diodes Inc. ZTX551 is a high-performance PNP silicon planar medium power bipolar transistor, engineered for reliability and stability across a broad spectrum of industrial applications. Featuring a robust continuous collector current of -1A and a high collector-base voltage rating of -80V, this transistor is built to handle demanding power management tasks with consistent performance.

Designed for operation within an extensive temperature range of -55 to 200°C, the ZTX551 ensures functionality in challenging environmental conditions, from freezing cold to intense heat. Its E-Line through-hole case style facilitates secure and straightforward mounting on printed circuit boards (PCBs), providing a durable connection for long-term use in fixed installations.

Key Specifications & Features

• High Voltage & Current Rating: Supports up to 60V collector-emitter voltage and a continuous 1A collector current, making it suitable for medium-power switching and amplification circuits.
• Broad Operating Temperature: Reliable performance from -55°C to 200°C, ideal for industrial controls, automotive electronics, and power supplies exposed to temperature extremes.
• Excellent Frequency Response: A transition frequency of 150MHz allows for effective use in amplifier and oscillator circuits requiring good high-frequency performance.
• High DC Current Gain: A minimum DC current gain (hFE) of 50 ensures efficient signal amplification and low base drive requirements.
• Robust Power Handling: With a power dissipation of 1W, it can manage significant thermal loads when used with appropriate heat management.

This transistor is a versatile and dependable component for engineers and hobbyists designing robust electronic systems where durability, power handling, and a wide operational range are critical.