UNR221900L

Overview

The UNR221L is a silicon NPN epitaxial planar transistor with built-in resistors, designed for digital circuits. It features an EIAJ SC-59 (Mini3-G1) package. The component includes two integrated resistors: R1 is 4.7 kΩ and R2 is 4.7 kΩ. Absolute maximum ratings at 25°C include a collector-base voltage of 50 V, collector-emitter voltage of 50 V, collector current of 100 mA, and total power dissipation of 200 mW. The junction temperature rating is 150 °C, with a storage temperature range from −55 to +150 °C.

Feature Summary

• Integrates dual resistors within the transistor package to reduce component count and equipment size.
• Utilizes a mini type package suitable for automatic insertion via tape or magazine packing.

Applications

• Digital circuit applications
• General electronic equipment

Procurement Notes

Verify the specific product lifecycle stage before procurement, as the datasheet indicates maintenance or discontinued status categories. Confirm that the latest specifications align with your design requirements by consulting official Panasonic Industry channels. Ensure compliance with export control laws if applicable.

Selection Notes

Select this component when space reduction and part count minimization are priorities in digital designs. Verify that the required resistor values match the fixed 4.7 kΩ configuration for both R1 and R2. Ensure operating conditions remain within the specified absolute maximum ratings for voltage, current, and power dissipation.

Part Context

This device belongs to the UNR221x Series, which comprises various configurations of NPN transistors with built-in resistors. The series offers different resistance combinations to suit diverse digital logic interface needs while maintaining a consistent compact package form factor.

Replacement Considerations

Consult official Panasonic documentation for confirmed substitute part numbers. Cross-referencing requires matching the SC-59 package, NPN polarity, and specific internal resistor values.