ZTX603

Single Bipolar Transistors Overview

The ZTX603 is an NPN silicon planar medium power Darlington transistor manufactured by Diodes Incorporated. It features a collector-emitter breakdown voltage of 80 V and supports a continuous collector current of 1 A. The device provides a minimum static forward current transfer ratio (hFE) of 2,000 at a collector current of 1 A. Power dissipation is rated at 1 W at 25°C ambient temperature, with a derating factor of 5.7 mW/°C above this threshold. The transition frequency is specified at 150 MHz.

Single Bipolar Transistors Feature Summary

• High DC current gain capability suitable for sensitive signal amplification
• Robust construction designed for medium power switching applications
• Integrated Darlington configuration minimizes required drive current

Single Bipolar Transistors Applications

• General-purpose high-gain amplification circuits
• Power switching loads requiring low base drive current
• Driver stages for relays or solenoids

Single Bipolar Transistors Procurement Notes

Verify the specific package variant against the datasheet, as the ZTX603 family includes through-hole and surface-mount options. Confirm RoHS compliance status and check for any recent production change notices regarding assembly sites or wafer sources to ensure supply chain consistency.

Single Bipolar Transistors Selection Notes

Select the ZTX603 when a high current gain is required to drive moderate loads directly from logic outputs. Ensure the operating voltage remains below the 80 V collector-emitter limit. Consider thermal management requirements if the device operates near its maximum power dissipation rating in enclosed environments.

Single Bipolar Transistors Part Context

This component belongs to the ZTX series of NPN silicon planar medium power Darlington transistors produced by Diodes Incorporated. The series is engineered to provide high gain and robust performance for general-purpose electronic designs requiring efficient current control.

Single Bipolar Transistors Replacement Considerations

The ZTX602 is a related part within the same series offering similar characteristics but with a lower collector-emitter voltage rating of 60 V compared to the 80 V rating of the ZTX603.