XN0121E00L

Overview

The XN0121E is a composite transistor device manufactured by Panasonic Electronic Components, designed for switching and digital circuits. It integrates two NPN epitaxial planar transistors into a single SC-74A Mini5-G1 package with an internal bias resistor ratio of 2.14. The component supports a maximum collector current of 100 mA and a collector-emitter voltage of 50 V. Key electrical characteristics include a minimum forward current transfer ratio (hFE) of 60 at 5 mA, a transition frequency of 150 MHz, and a total power dissipation rating of 300 mW.

Feature Summary

• Integrates two emitter-coupled transistors with a built-in resistor into one package to reduce mounting area and assembly costs.

Applications

• Switching circuits
• Digital logic circuits

Procurement Notes

Verify the specific ordering suffix against official Panasonic documentation to confirm package type and compliance status. Confirm availability through authorized distributors as lifecycle stages may vary. Ensure the component meets RoHS Directive requirements for the intended application environment.

Selection Notes

Select this component when space-saving integration of dual NPN transistors is required. Verify that the 100 mA current limit and 50 V voltage rating align with circuit demands. Consider the fixed internal resistance ratio when designing base drive networks.

Part Context

This part belongs to the XN series of composite transistors from Panasonic. It serves as a modern replacement for discrete transistor pairs, offering a compact alternative to using two separate UNR221E devices in a single footprint.

Replacement Considerations

Official datasheets indicate this device functions as a direct replacement for two UNR221E transistors.