2SA20570P

Single Bipolar Transistors Overview

The Panasonic 2SA2057 is a silicon PNP epitaxial planar power transistor designed for audio/visual equipment and industrial DC-DC converters. It features high-speed switching with short storage and fall times, low collector-emitter saturation voltage, and superior forward current transfer ratio linearity. The device is housed in a TO-220D package providing excellent withstand voltage of 5 kV. Key electrical ratings include a collector current of -3 A, peak collector current of -6 A, and collector power dissipation of 20 W at 25°C.

Single Bipolar Transistors Feature Summary

• High speed switching capability with minimized storage and fall times
• Low collector-emitter saturation voltage for efficient operation
• Superior forward current transfer ratio linearity
• TO-220D package with guaranteed 5 kV withstand voltage

Single Bipolar Transistors Applications

• Power supply circuits for TVs and VCRs
• Industrial DC-DC converter applications

Single Bipolar Transistors Procurement Notes

Verify the specific hFE rank (Q or P) required for your design, as the datasheet defines distinct gain ranges for each classification. Confirm that the component meets standard application requirements, as it is not qualified for special applications involving life support or aerospace systems without prior consultation. Ensure thermal management aligns with the specified junction temperature limits.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring high-speed switching and low saturation voltage in a robust TO-220D package. Consider the -3 A continuous collector current limit and the need for appropriate heat sinking to maintain performance within the 150°C junction temperature rating. Verify that the -60 V collector-emitter voltage rating suits the system's maximum operating conditions.

Single Bipolar Transistors Part Context

This part belongs to the Panasonic 2SA series of silicon PNP transistors. It is specifically engineered for general-purpose power amplification and switching tasks in consumer electronics and industrial control units. The TO-220D-A1 package provides mechanical stability and electrical isolation suitable for through-hole mounting on printed circuit boards.

Single Bipolar Transistors Replacement Considerations

Consult official Panasonic documentation for verified substitute part numbers. Cross-referencing should be performed carefully to ensure compatibility with the TO-220D package dimensions and the specific electrical characteristics required by the original design.

Single Bipolar Transistors FAQ

What are the hFE gain classifications for the 2SA2057?

The device offers two hFE ranks: Rank Q ranges from 120 to 250, and Rank P ranges from 160 to 320, measured at IC = -1 A and VCE = -4 V.

Is the 2SA2057 suitable for automotive safety applications?

No, the product is intended for standard applications such as office equipment and household appliances. It is not recommended for special applications like automobiles or traffic control equipment without prior consultation.

What is the maximum collector-base voltage rating?

The absolute maximum rating for collector-base voltage (Emitter open) is -60 V.