DIODES INC. ZTX450 NPN Silicon Transistor, E-Line (TO-92)

The DIODES INC. ZTX450 is a through-hole, NPN silicon planar medium power transistor, presented in a compact and industry-standard E-Line package that is TO-92 compatible. This robust component is engineered for reliable performance in a variety of analogue amplification and switching circuits, offering a solid balance of voltage, current, and power handling capabilities.

Key electrical specifications include a collector to emitter voltage (Vce) of 45V and a collector to base voltage of 60V, making it suitable for low to medium voltage applications. With a continuous collector current rating of 1A and a power dissipation (Pd) of 1W, it can handle significant loads for its package size. Efficiency in switching roles is highlighted by a low collector to emitter saturation voltage (Vce(sat)) of just 250mV at a 150mA collector current, which helps to minimise power loss.

The transistor features a high DC current gain (hFE) with a minimum of 100, ensuring good signal amplification. Its transition frequency of 150MHz supports operation in a range of analogue circuits. The device is built to endure a wide operating temperature range from -55°C to 200°C, providing reliability in challenging environmental conditions.

Physically, the ZTX450 is designed for straightforward through-hole mounting (THT) on printed circuit boards (PCBs), featuring three pins for easy integration. Its compact E-Line case style is a common footprint, facilitating design and replacement in existing layouts.

Specifications Overview

• Transistor Polarity: NPN
• Collector Emitter Voltage (Vce): 45V
• Continuous Collector Current: 1A
• Power Dissipation: 1W
• Collector-Emitter Saturation Voltage: 250mV @ 150mA
• DC Current Gain (hFE Min): 100
• Transition Frequency: 150MHz
• Operating Temperature Range: -55°C to 200°C
• Mounting Type: Through Hole<br