UNR212400L

Overview

The UNR212400L is a Silicon PNP epitaxial planar transistor with built-in resistors, designed for digital circuits. It features an internal connection of Base (Pin 1), Emitter (Pin 2), and Collector (Pin 3) within an SC-59 package. The device has a maximum collector current of -500 mA and a collector-emitter voltage rating of -50 V. For the UNR2124 variant, the input resistance R1 is nominally 2.2 kΩ and R2 is 10 kΩ. The total power dissipation is rated at 200 mW at 25°C ambient temperature.

Feature Summary

• Reduces equipment size and component count by integrating two resistors with a single transistor.
• Utilizes a mini-type SC-59 package suitable for automatic insertion via tape or magazine packing.

Applications

• Digital logic circuits
• General electronic equipment
• Office equipment
• Communications equipment

Procurement Notes

Verify the specific lifecycle status of the UNR212400L directly with Panasonic Semiconductor Sales before finalizing procurement plans. The datasheet indicates that product specifications are subject to change without notice. Confirming the latest Product Standards ensures compatibility with current manufacturing requirements and avoids potential obsolescence issues during production runs.

Selection Notes

Select the UNR212400L when a PNP transistor configuration with a 2.2 kΩ base resistor and a 10 kΩ emitter resistor is required. Ensure the design operates within the -50 V collector-emitter voltage limit and does not exceed the 200 mW total power dissipation threshold. This component is intended for standard applications rather than specialized safety-critical systems.

Part Context

This component belongs to the UNR212x Series, which includes variants such as UNR2121, UNR2122, UNR2123, UNR212X, and UNR212Y. Each series member offers different combinations of internal bias resistors while maintaining the same physical package and general electrical characteristics. The UNR2124 specifically provides a 2.2 kΩ to 10 kΩ resistor ratio.

Replacement Considerations

Direct substitutes include other members of the UNR212x family, such as the UN2124, which shares identical pinout and functional characteristics. Verify that any replacement maintains the required PNP polarity and resistor values for the specific circuit application.