2SC39400RA

Single Bipolar Transistors Overview

The Panasonic 2SC3940RA is a silicon NPN epitaxial planar transistor designed for low-frequency output and driver amplification. It operates with a collector current of 1 A and peak current of 1.5 A. The device features a TO-92NL-A1 package. Electrical ratings include a collector-emitter voltage of 25 V (2SC3940) or 50 V (2SC3940A), and a collector-base voltage of 30 V or 60 V respectively. Transition frequency reaches 200 MHz, with power dissipation up to 1 W at 25°C.

Single Bipolar Transistors Feature Summary

• Low collector-emitter saturation voltage for efficient switching
• Radial taping supply capability for automated assembly
• Complementary pairing with 2SA1534 series transistors

Single Bipolar Transistors Applications

• Low-frequency output amplification circuits
• Driver amplification stages
• General electronic equipment and household appliances

Single Bipolar Transistors Procurement Notes

Verify the specific suffix variant required, as the base model encompasses distinct voltage ratings for the 2SC3940 and 2SC3940A configurations. Confirm the component lifecycle status on the manufacturer's official website prior to procurement, as maintenance or discontinuation notices may apply to this product line.

Single Bipolar Transistors Selection Notes

Select the appropriate voltage rating based on circuit requirements: 25 V for standard applications or 50 V for higher voltage needs. Ensure the design accommodates the 1 W power dissipation limit within the specified ambient temperature range. Verify that the TO-92NL-A1 package dimensions align with the target PCB layout constraints.

Single Bipolar Transistors Part Context

This component belongs to the Panasonic 2SC3940 family of small-signal bipolar transistors. It utilizes an NPN silicon epitaxial planar structure optimized for audio and general-purpose amplification tasks. The device is intended for standard commercial electronics rather than specialized automotive or aerospace environments requiring exceptional reliability.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly identifies the 2SA1534 and 2SA1534A as complementary PNP counterparts. No other direct substitute part numbers are documented in the provided source material.