PZT2222A

Single Bipolar Transistors Overview

The PZT2222A is an NPN general-purpose amplifier and switch manufactured by onsemi, housed in a SOT-223 (TO-261) four-lead surface-mount package. It supports collector currents up to 1.0 A with a collector-emitter voltage of 40 V and a collector-base voltage of 75 V. The device features a maximum power dissipation of 1,000 mW at 25°C, derating linearly above that temperature. Electrical characteristics include a DC current gain ranging from 35 to 300, a transition frequency of 300 MHz, and a junction-to-ambient thermal resistance of 125 °C/W.

Single Bipolar Transistors Feature Summary

• Designed for medium-power amplification and switching applications requiring high collector currents.
• Utilizes a SOT-223 surface-mount package optimized for efficient heat dissipation.
• Provides robust electrical performance with a wide operating temperature range.

Single Bipolar Transistors Applications

• Medium-power signal amplification circuits
• General-purpose electronic switching
• Driver stages for loads requiring up to 1.0 A

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as the component was originally developed by Fairchild Semiconductor. Confirm the specific datasheet revision and ordering suffixes to ensure compatibility with required packaging and compliance standards before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when a surface-mount solution is required for higher power handling compared to smaller packages like SOT-23. Ensure the PCB layout accommodates the necessary collector pad area to maintain the specified thermal resistance and prevent overheating during continuous operation.

Single Bipolar Transistors Part Context

This device belongs to the PN2222A family of NPN transistors, sharing identical electrical specifications with the MMBT2222A but distinguished by its larger SOT-223 package. This form factor provides superior thermal management capabilities, making it suitable for applications where higher power dissipation is critical.

Single Bipolar Transistors Replacement Considerations

The MMBT2222A serves as a functional substitute within the same product family. Note that the MMBT2222A utilizes a smaller SOT-23 package with lower power dissipation ratings, requiring careful thermal analysis if used as a direct replacement.

Single Bipolar Transistors FAQ

What is the maximum collector current rating?

The absolute maximum collector current (IC) is rated at 1.0 A.

How does the package affect thermal performance?

The SOT-223 package offers a junction-to-ambient thermal resistance of 125 °C/W, which is significantly lower than smaller packages, allowing for higher power dissipation up to 1,000 mW.

Is this component authorized for life support systems?

No, the manufacturer explicitly states that these products are not authorized for use as critical components in life support devices or systems without written approval.