UNR222100L

Overview

The Panasonic UNR222100L is a silicon NPN epitaxial planar pre-biased transistor designed for digital circuits. It integrates two resistors within a Mini3-G1 (SC-59) surface-mount package to reduce component count and equipment size. The device features a collector-emitter voltage of 50 V, a maximum collector current of 500 mA, and a total power dissipation of 200 mW at 25°C. Internal resistance values are R1 = 2.2 kΩ and R2 = 2.2 kΩ with a ±30% tolerance. Key electrical characteristics include a forward current transfer ratio (hFE) of 40 at IC = 100 mA, a collector-emitter saturation voltage of 0.25 V max, and a transition frequency of 200 MHz.

Feature Summary

• Integrated dual-resistor configuration reduces board space and simplifies circuit design.
• Miniature SC-59 package facilitates automated insertion via tape or magazine packing.
• Optimized for high-speed switching applications in digital logic circuits.

Applications

• Digital logic interface circuits
• Switching applications requiring compact form factors
• General-purpose electronic equipment

Procurement Notes

Verify the specific part number against official manufacturer lifecycle databases before procurement. The datasheet indicates this series may be subject to maintenance or discontinuation plans. Confirm RoHS compliance status and latest product standards directly with Panasonic Industry sales representatives to ensure availability and specification accuracy for new designs.

Selection Notes

Select the UNR222100L when a compact NPN pre-biased transistor with 2.2kΩ base and emitter-base resistors is required. Ensure the application operates within the 50V collector-emitter voltage limit and 500mA current rating. Verify that the 200mW power dissipation capability aligns with the thermal environment, as derating is necessary above 25°C ambient temperature.

Part Context

This component belongs to the UNR222x Series of transistors with built-in resistors. The series includes variants such as UNR2222, UNR2223, and UNR2224, which differ primarily in their internal resistor values (e.g., 4.7kΩ, 10kΩ). All members share the same Mini3-G1 package and fundamental electrical ratings, offering designers flexibility in biasing configurations for standard digital applications.

Replacement Considerations

Direct substitutes within the same family include UNR2222, UNR2223, and UNR2224, provided their specific resistor values match the circuit requirements. Cross-manufacturer replacements must be verified for pin compatibility (EIAJ SC-59), voltage/current ratings, and hFE characteristics.