2SC3940ASA

Single Bipolar Transistors Overview

The Panasonic 2SC3940ASA is a small signal NPN silicon bipolar junction transistor housed in a TO-92 package. It features a maximum collector current of 1 A and a collector-emitter breakdown voltage of 25 V. The device has a minimum DC current gain (hFE) of 170 and supports a maximum operating temperature of 150 °C. It is RoHS compliant and designed for low-frequency output and driver amplification.

Single Bipolar Transistors Feature Summary

• Low collector-emitter saturation voltage
• Compatible with radial taping supply methods

Single Bipolar Transistors Applications

• Low-frequency output amplification
• Driver amplification circuits

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'ASA' against official Panasonic documentation to confirm pinout and electrical tolerances match standard 2SC3940 variants. Ensure the component is sourced from authorized distributors to guarantee authenticity and compliance with RoHS standards. Check for obsolescence status before finalizing procurement plans.

Single Bipolar Transistors Selection Notes

Select this component for applications requiring moderate current handling up to 1 A with low saturation voltage. It serves as a complementary pair to the 2SA1534 series PNP transistors. Consider the TO-92 package constraints for thermal management and physical space requirements in the design.

Single Bipolar Transistors Part Context

This part belongs to the Panasonic 2SC3940 series of NPN epitaxial planar transistors. The series is engineered for general-purpose low-frequency power amplification and driver stages. It offers a balance of high current capability and low voltage drop, making it suitable for consumer electronics and audio equipment.

Single Bipolar Transistors Replacement Considerations

Official complementary parts include the 2SA1534 and 2SA1534A PNP transistors. Verify pin compatibility and electrical ratings when substituting with generic equivalents.