ZTX749

Single Bipolar Transistors Overview

The ZTX749 is a PNP low saturation transistor manufactured by onsemi, formerly Fairchild Semiconductor. It features a collector-emitter voltage of -25 V and a continuous collector current rating of -2 A. The device utilizes a TO-226 package and supports a total power dissipation of 1 W. It operates within a junction temperature range of -55 °C to +150 °C.

Single Bipolar Transistors Feature Summary

• Designed for high current gain and low saturation voltage applications
• Capable of handling continuous collector currents up to 2 A
• Optimized for efficient switching with minimal voltage drop

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Power management systems requiring low saturation characteristics
• Driver stages for loads demanding high current gain

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin as onsemi or its predecessor Fairchild Semiconductor when sourcing. Confirm the specific package variant matches the required TO-226 footprint. Ensure the component meets the absolute maximum ratings defined in the official datasheet for your operating conditions.

Single Bipolar Transistors Selection Notes

Select this component for designs prioritizing low saturation voltage at high currents. Evaluate thermal resistance requirements given the 1 W dissipation limit. Compare against alternatives if higher breakdown voltages or different packaging styles are necessary for the target application.

Single Bipolar Transistors Part Context

This part belongs to the ZTX series of transistors known for robust performance in power applications. It serves as a discrete semiconductor solution for controlling higher current loads using standard logic or driver signals.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference lists from onsemi for verified substitutes. Ensure any replacement maintains identical pinout configuration and exceeds the original electrical ratings.