UNR9219J0L

Overview

The UNR9219J0L is a Silicon NPN epitaxial planar transistor with built-in resistors, designed for digital circuits. It features an SS-Mini (SC-89) package with three pins. The device has a maximum collector-emitter voltage of 50 V and a maximum collector current of 100 mA. Total power dissipation is rated at 125 mW. The internal configuration includes a base resistor (R1) of 1 kΩ and an emitter resistor (R2) of 10 kΩ. The forward current transfer ratio (hFE) ranges from 30 to 400 at IC = 5 mA and VCE = 10 V. The transition frequency is 150 MHz.

Feature Summary

• Integrates biasing resistors directly into the package to reduce component count and board space.
• Utilizes an SS-Mini surface-mount package suitable for automated tape packing insertion.

Applications

• Digital circuit switching applications
• General electronic equipment such as office machines and measuring instruments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to confirm pinout and resistance values. Ensure the component meets RoHS compliance requirements if applicable to the target assembly. Confirm availability status as older series components may have limited production runs or require substitution verification.

Selection Notes

Select this component when a compact NPN switch with fixed biasing ratios is required. The 1 kΩ base resistor and 10 kΩ emitter resistor provide specific gain characteristics suitable for standard logic levels. Verify that the 125 mW power dissipation rating accommodates the thermal environment of the final application.

Part Context

This part belongs to the Panasonic UNR921xJ series of transistors with built-in resistors. The series offers various resistor combinations to suit different drive requirements while maintaining a consistent small outline footprint. The UNR9219J variant specifically pairs a 1 kΩ input resistor with a 10 kΩ output resistor.

Replacement Considerations

Consult the official Panasonic replacement list for cross-reference part numbers. Verify that any substitute maintains the same SS-Mini package dimensions and electrical ratings to ensure mechanical and functional compatibility.