ZTX549STZ

Single Bipolar Transistors Overview

The ZTX549STZ is a PNP silicon planar medium power transistor manufactured by Diodes Incorporated. It features a collector-emitter breakdown voltage of -30 V and supports a continuous collector current of -1 A with a peak pulse current of -2 A. The device dissipates up to 1 W at 25°C ambient temperature, derating by 5.7 mW/°C above this threshold. Electrical characteristics include a transition frequency of 100 MHz, an output capacitance of 25 pF, and switching times of 300 ns (on) and 50 ns (off). The static forward current transfer ratio ranges from 40 to 300 depending on operating conditions.

Single Bipolar Transistors Feature Summary

• Utilizes a PNP silicon planar construction for robust performance in medium power applications.
• Designed for high-speed switching operations with defined turn-on and turn-off time parameters.
• Capable of handling significant continuous and peak collector currents within specified thermal limits.

Single Bipolar Transistors Applications

• General-purpose switching circuits requiring medium power handling capabilities.
• Driver stages in amplifier configurations utilizing PNP topology.
• Power management systems operating within the specified voltage and current ratings.

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix STZ against official Diodes Incorporated documentation to confirm packaging configuration and compliance status. Ensure that the procurement specifications align precisely with the electrical requirements outlined in the manufacturer's datasheet. Cross-reference part numbers to avoid substitution errors during sourcing.

Single Bipolar Transistors Selection Notes

Select this component based on its -30 V collector-emitter voltage rating and -1 A continuous current capacity. Evaluate the thermal dissipation requirements against the 1 W power limit and the 5.7 mW/°C derating curve. Confirm that the transition frequency and switching times meet the speed requirements of the target circuit design.

Single Bipolar Transistors Part Context

This component belongs to the ZTX549 series of PNP silicon planar medium power transistors produced by Diodes Incorporated. The series is characterized by its ability to operate effectively in switching and amplification roles. The device utilizes a TO-92 compatible E-Line package suitable for through-hole mounting.

Single Bipolar Transistors Replacement Considerations

The ZTX549A is documented as a variant within the same series offering different gain characteristics. Verify compatibility before substitution.