2SA1221-AZ

Single Bipolar Transistors Overview

The 2SA1221-AZ is a PNP epitaxial planar silicon transistor manufactured by Renesas Electronics Corporation. It is designed for general-purpose amplifier and switching applications, featuring a single configuration with a maximum collector current of 0.5 A and a collector-emitter voltage rating of 80 V. The device operates within a junction temperature range of -40°C to +150°C and is housed in a TO-92 package.

Single Bipolar Transistors Feature Summary

• Utilizes epitaxial planar silicon construction for reliable performance
• Designed for general-purpose amplification and switching functions
• Supports high thermal stability with an extended operating temperature range

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Electronic switching applications
• Low-power signal processing stages

Single Bipolar Transistors Procurement Notes

Verify the specific suffix designation against official Renesas documentation to confirm exact electrical tolerances and packaging variations. Ensure that the procurement channel provides traceable component history. Cross-reference the manufacturer part number with the latest datasheet revision to confirm compliance with current environmental standards and availability status before finalizing orders.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring a standard PNP transistor with moderate current handling capabilities. Evaluate the thermal resistance characteristics relative to the expected power dissipation in the target application. Confirm that the package dimensions fit the available PCB real estate and that the voltage ratings provide sufficient margin for the circuit's operational peaks.

Single Bipolar Transistors Part Context

This transistor belongs to Renesas' discrete semiconductor portfolio, which includes various bipolar junction transistors for consumer and industrial electronics. The 2SA series typically serves as a foundational component for analog signal conditioning and low-power control logic in embedded systems and peripheral interface circuits.

Single Bipolar Transistors Replacement Considerations

Consult official substitution guides for compatible PNP transistors with matching current and voltage ratings. Verify pinout compatibility and thermal performance equivalence before implementing any alternative components in existing designs.