2SA1540E

Single Bipolar Transistors Overview

The onsemi 2SA1540E is a PNP epitaxial planar silicon transistor designed for high-speed switching applications. It features a maximum collector current of 1.5 A and a collector-emitter breakdown voltage of 80 V. The device operates with a DC current gain (hFE) ranging from 100 to 300, depending on the specific grade. Key electrical parameters include a collector-base voltage of 80 V, an emitter-base voltage of 6 V, and a collector-emitter saturation voltage of 0.7 V at 1 A. Power dissipation is rated at 1 W in free air. The component utilizes a TO-92 through-hole package and supports a maximum junction temperature of 150 °C.

Single Bipolar Transistors Feature Summary

• High-speed switching capability optimized for digital logic circuits
• Low collector-emitter saturation voltage for efficient power handling
• Wide DC current gain range ensuring consistent amplification performance

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Driver stages for relays and lamps
• Logic interface buffers

Single Bipolar Transistors Procurement Notes

Verify the specific suffix code to confirm the exact hFE binning grade required for your design, as gain varies by sub-model. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as environmental declarations may vary by production batch. Ensure the TO-92 package dimensions match your PCB footprint constraints before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with moderate current handling and fast switching speeds is required. The 80 V rating suits low-voltage logic systems. Compare against complementary NPN types if push-pull configurations are needed. Verify that the 1 W power dissipation limit accommodates thermal conditions in the intended enclosure without additional heatsinking.

Single Bipolar Transistors Part Context

This part belongs to onsemi's lineup of general-purpose bipolar junction transistors. It serves as a standard discrete semiconductor solution for analog and digital switching tasks. The TO-92 package provides a cost-effective mounting option for consumer electronics and industrial control boards where space allows for through-hole assembly.

Single Bipolar Transistors Replacement Considerations

Check for direct substitutes such as the 2SA1015 or 2SC1815 series, ensuring pinout compatibility and matching voltage/current ratings. Verify that alternative parts meet the same switching speed and gain requirements.