UNR51A4G0L

Overview

The UNR51A4G0L is a Silicon PNP epitaxial planar transistor with built-in bias resistors, designed for digital circuits. It features an SMini3-F2 package and complies with the RoHS Directive (EU 2002/95/EC). Key electrical parameters include a collector-emitter voltage of -50 V, a maximum collector current of -80 mA, and a total power dissipation of 150 mW at 25°C. The internal resistor configuration consists of R1 at 10 kΩ and R2 at 47 kΩ, yielding a resistance ratio of approximately 0.21. The device exhibits a minimum forward current transfer ratio (hFE) of 80 at -5 mA and -10 V, with a transition frequency of 80 MHz.

Feature Summary

• Integrates two bias resistors to reduce component count and equipment size.
• Utilizes the SMini3-F2 surface-mount package for automated insertion.

Applications

• Digital circuit switching applications
• General electronic equipment such as office and communication devices

Procurement Notes

Verify the specific ordering suffix against official Panasonic documentation to confirm exact packaging and marking details. Confirm availability status directly with authorized distributors or the manufacturer, as lifecycle stages may vary. Ensure compliance with export control regulations if applicable to your region. Request the latest Product Standards before final design implementation to guarantee specification alignment.

Selection Notes

Select this component for designs requiring a compact PNP pre-biased transistor solution. Verify that the -50 V collector-emitter voltage rating meets the circuit requirements. Ensure the -80 mA maximum collector current is sufficient for the intended load. Consider the 150 mW power dissipation limit when calculating thermal performance in the SMini3-F2 package.

Part Context

This part belongs to the UNR51A series of transistors with built-in resistors manufactured by Panasonic Electronic Components. The series is engineered for digital logic applications where space savings and simplified circuit design are priorities. The UNR51A4G variant specifically denotes the PNP type with defined internal resistor values.

Replacement Considerations

Consult official Panasonic resources for confirmed substitute part numbers. Cross-referencing with other manufacturers requires careful verification of pinout, voltage ratings, and internal resistor ratios to ensure functional compatibility.

FAQ

What are the internal resistor values for the UNR51A4G?

The internal resistors are configured as R1 = 10 kΩ and R2 = 47 kΩ.

What is the maximum collector current rating?

The absolute maximum collector current (IC) is rated at -80 mA.

Does this component comply with environmental directives?

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