2N3421

Single Bipolar Transistors Overview

The Microchip Technology 2N3421 is a silicon NPN power bipolar junction transistor (BJT) designed for through-hole mounting in TO-5-3 packages. It supports a maximum collector current of 3 A and operates with a collector-emitter voltage of 80 V. The device features a collector-base voltage rating of 125 V and an emitter-base voltage of 8 V. With a power dissipation capacity of 1 W, it functions within a temperature range of -65°C to +200°C. DC current gain ranges from a minimum of 40 at 100 mA to a maximum of 120 at 1 A.

Single Bipolar Transistors Feature Summary

• High thermal stability enabling operation up to 200°C
• Robust construction suitable for high-power switching applications
• Integrated self-calibration capabilities for precision signal conditioning

Single Bipolar Transistors Applications

• Power switching circuits
• Amplifier stages
• Industrial control systems

Single Bipolar Transistors Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and electrical tolerances. Ensure compatibility with existing thermal management designs due to the 1W dissipation limit. Confirm RoHS status as non-compliant for standard commercial use cases requiring lead-free compliance.

Single Bipolar Transistors Selection Notes

Select this component when high-temperature reliability and moderate power handling are required in a through-hole format. Consider the TO-5-3 package constraints for PCB layout. Evaluate the 3A current limit against peak load requirements to ensure safe operating area margins during transient conditions.

Single Bipolar Transistors Part Context

This part belongs to Microchip's discrete semiconductor portfolio, specifically within the bipolar transistor category. It serves as a ruggedized solution for environments where standard plastic packages may fail due to extreme heat or mechanical stress.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference tools for parametrically similar parts. Verify pinout compatibility and thermal resistance values before substituting with alternative manufacturers' equivalents.