XN0421400L

Overview

The XN0421400L is a composite transistor featuring two NPN elements with built-in base resistors in a single Mini6-G1 package. It operates at a maximum collector-emitter voltage of 50 V and supports a continuous collector current of 100 mA. The device provides a total power dissipation rating of 300 mW at 25°C, derating linearly to zero above 75°C. Key electrical characteristics include a transition frequency of 150 MHz and a typical forward current transfer ratio (hFE) of 80 at 5 mA. Internal connection utilizes pin 1 and 4 as collectors, pins 2 and 5 as bases, and pins 3 and 6 as emitters.

Feature Summary

• Dual NPN transistors integrated into a single surface-mount package for space efficiency
• Built-in base resistors eliminate external components and reduce assembly costs
• High-speed switching capability with a 150 MHz transition frequency
• Low saturation voltage for efficient digital circuit operation

Applications

• General-purpose switching circuits
• Digital logic interface applications
• Driver stages for low-power loads

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and lifecycle status. Confirm RoHS compliance requirements for your target market. Check for moisture sensitivity level (MSL) ratings if lead-free soldering processes are utilized. Ensure the supplier provides valid traceability data for quality assurance purposes.

Selection Notes

Select this component when dual matched NPN pairs with fixed biasing are required in a compact footprint. Evaluate the 100 mA current limit and 300 mW thermal constraints against peak load demands. Consider the 50 V breakdown voltage relative to the supply rail. Verify that the internal resistor values align with the intended logic input levels.

Part Context

This part belongs to the XN0421 series of composite transistors manufactured by Panasonic Industry. It serves as a direct replacement for discrete dual-transistor configurations, simplifying PCB layout. The Mini6-G1 package is designed for automated surface-mount assembly processes.

Replacement Considerations

The datasheet identifies the UNR2214 (UN2214) as the conventional equivalent part number. Verify pinout compatibility and electrical tolerances before substituting with other dual NPN arrays.