2SD1803S-E

Single Bipolar Transistors Overview

The onsemi 2SD1803S-E is a single NPN silicon bipolar junction transistor housed in a TP (TO-251) surface-mount package. It supports a maximum collector current of 5 A and a collector-to-emitter voltage of 50 V. The device features a gain-bandwidth product of 180 MHz and a collector-to-emitter saturation voltage of up to 400 mV at 3 A. It operates with a junction temperature rating of 150 °C and dissipates 1 W at ambient temperature.

Single Bipolar Transistors Feature Summary

• Low collector-to-emitter saturation voltage for efficient switching
• High current handling capability combined with high transition frequency
• Excellent DC current gain linearity across operating ranges
• Fast switching speed suitable for high-frequency applications

Single Bipolar Transistors Applications

• Relay drivers
• High-speed inverters
• Converters
• General high-current switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'E' indicates lead-free compliance as documented in the ordering information. Confirm the TP package type matches the required footprint. Check for end-of-life status or alternative sourcing options, as availability may vary by region and distributor.

Single Bipolar Transistors Selection Notes

Select this component for circuits requiring robust NPN switching with low saturation losses. Ensure the thermal design accommodates the 1 W dissipation limit at ambient conditions. Verify that the 50 V breakdown voltage meets the circuit's peak voltage requirements under all operating conditions.

Single Bipolar Transistors Part Context

This part belongs to the 2SD1803 series from onsemi, designed alongside the complementary 2SB1203 PNP transistor. The series targets general-purpose power switching needs within a compact form factor. It serves as a standard solution for medium-power discrete semiconductor applications.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers: 2SD1803T-TL-H.

Single Bipolar Transistors FAQ

What is the maximum collector current rating?

The maximum continuous collector current is rated at 5 A.

Does the device support halogen-free operation?

The datasheet specifies that the 'E' suffix denotes lead-free compliance, while the 'H' suffix denotes both lead-free and halogen-free construction.

What is the typical gain-bandwidth product?

The gain-bandwidth product (fT) is typically 180 MHz when measured at 5 V and 1 A.