UNR521200L

Overview

The Panasonic UNR521200L is a Silicon NPN epitaxial planar transistor with built-in bias resistors, designed for digital circuits. It features an S-Mini3-G1 package (EIAJ: SC-70) and supports automatic insertion via tape packing. Key electrical ratings include a collector-emitter voltage of 50 V, a collector current of 100 mA, and a total power dissipation of 150 mW at 25°C. The device incorporates a base resistor (R1) of 22 kΩ and an emitter resistor (R2) of 22 kΩ. It exhibits a transition frequency of 150 MHz and a forward current transfer ratio (hFE) ranging from 60 to 200 under standard test conditions.

Feature Summary

• Integrates two internal bias resistors within a single compact surface-mount package to reduce component count and equipment size.
• Utilizes an S-Mini type package compatible with automatic insertion through tape packing and magazine packing processes.

Applications

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

Procurement Notes

Verify the specific suffix '00L' against official Panasonic documentation to confirm availability status and packaging details. Confirm RoHS compliance requirements for your application. Check for any lifecycle stage changes such as planned maintenance or discontinuation before finalizing procurement plans.

Selection Notes

Select this component when a pre-biased NPN transistor is required for digital logic applications. Ensure the 22 kΩ/22 kΩ resistor configuration matches the circuit design needs. Verify that the 50 V voltage rating and 100 mA current capacity are sufficient for the intended load conditions.

Part Context

This part belongs to the UNR521x series of transistors with built-in resistors manufactured by Panasonic Industry. The series offers various resistor combinations to suit different drive requirements while maintaining a consistent small outline package form factor suitable for high-density PCB layouts.

Replacement Considerations

Consult the official Panasonic datasheet for equivalent part numbers within the UN521x conventional naming convention. Verify pinout compatibility and electrical characteristics before substituting with components from other manufacturers.

FAQ

What are the values of the built-in resistors for the UNR521200L?

The UNR5212 variant includes a base resistor (R1) of 22 kΩ and an emitter resistor (R2) of 22 kΩ.

What is the maximum collector-emitter voltage rating?

The maximum collector-emitter voltage (VCEO) is rated at 50 V with the base open.

Is this component suitable for aerospace applications?

No. The product documentation explicitly states it is not recommended for special applications such as aerospace where exceptional quality and reliability are required.