XN0421L00L

Overview

The Panasonic XN0421L00L is a composite transistor device containing two NPN epitaxial planar transistors with built-in bias resistors in a single SC-74 Mini6-G1 package. It operates with a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA per element. The total power dissipation rating is 300mW at 25°C ambient temperature. Key electrical characteristics include an input resistance (R1) of 4.7kΩ, a transition frequency (fT) of 150MHz, and a DC current gain (hFE) of 20 minimum at IC=5mA. The saturation voltage VCE(sat) is 0.25V max at IC=10mA.

Feature Summary

• Integrates two emitter-coupled NPN transistors with built-in bias resistors into one compact package to reduce mounting area and assembly costs.

Applications

• Switching circuits
• Digital logic circuits

Procurement Notes

Verify the specific lifecycle status directly with Panasonic Industry or authorized distributors before design finalization. Confirm that the SC-74 Mini6-G1 package dimensions align with the target PCB footprint. Ensure thermal management strategies account for the 300mW total power dissipation limit under expected operating conditions.

Selection Notes

Select this component when space constraints require dual NPN switching elements with integrated base biasing. Verify that the 4.7kΩ input resistance matches the driving circuit requirements. Consider the 50V voltage rating and 100mA current capability against the specific load demands of the application.

Part Context

This part belongs to the XN series of composite transistors from Panasonic. It serves as a direct replacement for older discrete resistor-transistor networks, offering a simplified bill of materials and reduced board space compared to using separate transistors and external biasing resistors.

Replacement Considerations

Check for pin-compatible alternatives within the same Panasonic XN family or other manufacturers' dual NPN pre-biased arrays in SC-74 packages. Verify that substitute parts maintain identical internal connection schemes and electrical parameters such as R1 value and hFE ranges.