UNR221N00L

Overview

The UNR221N00L is a Silicon NPN epitaxial planar transistor with built-in bias resistors, designed for digital circuits. It features a Mini3-G1 (SC-59) package. Key electrical parameters include a collector-emitter voltage of 50 V and a maximum collector current of 100 mA. The device incorporates a base resistor (R1) of 4.7 kΩ and an emitter resistor (R2) of 47 kΩ. The forward current transfer ratio (hFE) ranges from 80 to 400 at IC = 5 mA and VCE = 10 V. Transition frequency is specified at 150 MHz.

Feature Summary

• Integrates NPN transistor with dual bias resistors to reduce component count and board space.
• Utilizes a compact Mini3-G1 surface-mount package suitable for automated assembly.

Applications

• Digital logic interface circuits
• Switching applications in general electronic equipment
• Signal level translation

Procurement Notes

Verify the exact part number suffix against official Panasonic documentation, as variations may exist. Confirm lifecycle status, as this series includes discontinued or maintenance types. Ensure compliance with RoHS directives if required by the application environment. Cross-reference datasheet specifications directly with the manufacturer's latest release before finalizing procurement.

Selection Notes

Select based on required resistance values for R1 and R2, specifically 4.7 kΩ and 47 kΩ respectively for this variant. Consider the hFE range requirements for the specific switching speed and gain needed. Verify that the 50 V voltage rating and 100 mA current capacity meet the circuit load demands. Check thermal dissipation limits relative to ambient temperature conditions.

Part Context

This component belongs to the UNR221x Series, which offers various combinations of integrated bias resistors. The series provides standardized solutions for replacing discrete resistor-transistor networks. It is manufactured by Panasonic Electronic Components for use in standard commercial and industrial electronics.

Replacement Considerations

Direct substitutes must match the NPN configuration, 50V rating, 100mA current, and the specific 4.7kΩ/47kΩ resistor network within the SC-59 package. Verify pinout compatibility and electrical characteristics such as hFE and saturation voltage.

FAQ

What are the internal resistance values for the UNR221N?

The UNR221N contains a base resistor (R1) of 4.7 kΩ and an emitter resistor (R2) of 47 kΩ.

What is the transition frequency of this device?

The transition frequency (fT) is specified as 150 MHz under conditions of VCB = 10 V and IE = -2 mA.

Is this device compliant with environmental directives?

Yes, the product complies with the RoHS Directive (EU 2002/95/EC).