UNR921NJ0L

Overview

The UNR921NJ0L is a silicon NPN epitaxial planar transistor with built-in resistors, designed for digital circuits. It features an SS-Mini3-F1 package (EIAJ SC-89) and supports automatic insertion via tape packing. Key electrical parameters include a collector-emitter voltage of 50 V, a collector current of 100 mA, and a total power dissipation of 125 mW. The device incorporates a base resistor (R1) of 4.7 kΩ and a collector resistor (R2) of 47 kΩ, resulting in a resistance ratio of 0.1. It exhibits a forward current transfer ratio (hFE) ranging from 80 to 400 at IC = 5 mA and VCE = 10 V, with a transition frequency of 150 MHz.

Feature Summary

• Integrates two biasing resistors within the transistor package to reduce component count and equipment size.
• Utilizes the compact SS-Mini3-F1 surface-mount package suitable for automated assembly processes.

Applications

• Digital logic interface circuits
• Switching applications in general electronic equipment
• Signal processing stages requiring integrated biasing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm packaging format and compliance status. Ensure that the procurement channel provides authentic Panasonic Electronic Components products to guarantee adherence to the specified absolute maximum ratings and electrical characteristics outlined in the official datasheet.

Selection Notes

Select this component when a pre-biased NPN transistor is required for digital switching or logic interfacing. The specific 4.7 kΩ input and 47 kΩ output resistor values define its biasing profile. Confirm that the 50 V voltage rating and 100 mA current capacity align with the target circuit requirements before integration.

Part Context

This part belongs to the UNR921xJ series of transistors with built-in resistors manufactured by Panasonic Electronic Components. The series offers various resistor combinations tailored for different digital circuit applications, all sharing the same core NPN transistor structure and SS-Mini3-F1 package form factor.

Replacement Considerations

Consult the official Panasonic datasheet for the UNR921xJ series to identify alternative part numbers within the same family that offer different resistor ratios. Verify pin compatibility and electrical specifications before substituting with components from other manufacturers.