STA472A

Overview

The STA472A is a PNP Darlington transistor manufactured by Sanken Electric USA Inc. It features a collector-emitter voltage rating of -60 V and a continuous collector current capacity of -2 A. The device provides a high DC current gain (hFE) ranging from 2000 to 10000 at -4 V and -1 A. Key electrical characteristics include a saturation voltage (VCE(sat)) of -1.5 V maximum and a transition frequency (fT) of 100 MHz. It operates within a junction temperature range up to 150 °C and utilizes a 10-pin package configuration.

Feature Summary

• High current gain performance suitable for sensitive signal amplification
• Integrated internal base resistors for simplified circuit design
• Robust switching capabilities with defined turn-on and storage times

Applications

• General purpose switching applications
• Low-side driver circuits
• Amplifier stages requiring high input impedance

Procurement Notes

Verify the component status before integration, as official documentation explicitly states it is not recommended for new designs. Confirm that existing inventory meets specific quality standards and check for available lifecycle management options from the manufacturer to ensure long-term supply continuity for maintenance or replacement purposes.

Selection Notes

Select this component only for legacy system repairs or replacements where the original design specifications require these exact parameters. Evaluate thermal management requirements carefully, as power dissipation depends heavily on heatsinking conditions. Ensure the driving circuit can provide sufficient base current to maintain saturation given the high hFE variability across different operating temperatures.

Part Context

This component belongs to the STA series of PNP Darlington transistors produced by Sanken Electric. The series is characterized by integrated base resistors designed to simplify drive circuitry. The STA472A specifically targets general-purpose applications but has reached an end-of-life stage in active product development pipelines.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.