ZTX649STZ

Single Bipolar Transistors Overview

The ZTX649STZ is an NPN silicon planar medium-power transistor manufactured by Diodes Incorporated. It features a collector-emitter voltage of 25 V and supports a continuous collector current of 2 A with a peak pulse current of 6 A. The device dissipates up to 1 W of power at +25°C, derating linearly above this temperature. Key electrical characteristics include a transition frequency of 150 MHz typical and low saturation voltages of 0.12 V at 1 A base drive. It operates within a junction temperature range of -55°C to +200°C.

Single Bipolar Transistors Feature Summary

• NPN silicon planar construction designed for medium-power applications
• Capable of handling 2 A continuous collector current with low saturation voltage
• High thermal stability supporting operation up to +200°C junction temperature

Single Bipolar Transistors Applications

• Motor drivers
• DC-DC converters

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix 'STZ' against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Confirm component availability status as the datasheet explicitly states the part is not recommended for new designs. Ensure compliance with automotive qualification requirements if applicable to your system.

Single Bipolar Transistors Selection Notes

Select this component for circuits requiring robust NPN switching with high current capacity and wide operating temperature ranges. Evaluate thermal resistance parameters carefully, as heat dissipation relies on PCB copper area or case mounting. Consider that the device is marked as obsolete for new designs, necessitating a review of long-term supply chain viability.

Single Bipolar Transistors Part Context

This component belongs to the ZTX series of medium-power transistors from Diodes Incorporated. It utilizes the E-Line (TO-92 compatible) three-pin through-hole package. The series is engineered for general-purpose amplification and switching tasks in consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

Consult the manufacturer directly for officially confirmed substitute part numbers. No public substitutes are listed in the provided documentation.