2SD1838

Single Bipolar Transistors Overview

The 2SD1838 is an NPN Darlington power bipolar transistor manufactured by onsemi. It is housed in a TO-220ML through-hole package designed for high-current applications. The device supports a maximum collector current of 5 A and a collector-emitter voltage rating of 50 V. It features a maximum junction temperature of 150°C, ensuring reliable operation under thermal stress. This component is classified as a single bipolar transistor suitable for switching and amplification tasks requiring high gain and robust current handling capabilities.

Single Bipolar Transistors Feature Summary

• NPN Darlington configuration providing high current gain
• TO-220ML through-hole mounting for efficient heat dissipation
• Rated for 5 A continuous collector current
• Operates with up to 50 V collector-emitter voltage

Single Bipolar Transistors Applications

• High-power switching circuits
• Audio amplifier output stages
• Motor control interfaces
• Power supply regulation modules

Single Bipolar Transistors Procurement Notes

Verify the manufacturer marking matches onsemi specifications. Confirm the package type is TO-220ML and pinout alignment matches standard NPN Darlington configurations. Check for physical damage or bent leads upon receipt. Ensure storage conditions comply with moisture sensitivity level requirements to maintain solderability and electrical integrity before assembly.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain NPN transistor is required for driving loads up to 5 A. The TO-220ML package facilitates direct heatsinking for thermal management. Consider the 50 V voltage rating against circuit peak voltages. Verify that the application does not exceed the 150°C junction temperature limit during continuous operation to ensure long-term reliability.

Single Bipolar Transistors Part Context

This part belongs to the family of power bipolar transistors offered by onsemi. It serves as a discrete semiconductor solution for medium-to-high power electronics. The TO-220ML variant provides a compact footprint compared to traditional TO-220 packages while maintaining similar thermal performance characteristics for industrial and consumer electronic designs.

Single Bipolar Transistors Replacement Considerations

Cross-reference with other NPN Darlington transistors rated for 5 A and 50 V in TO-220ML packages. Verify pinout compatibility and thermal resistance values before substitution. Ensure equivalent current gain and saturation voltage characteristics match the original design requirements.