2SD1825

Single Bipolar Transistors Overview

The 2SD1825 is a single NPN Darlington bipolar junction transistor manufactured by onsemi. It features a collector current rating of 4 A and a collector-emitter breakdown voltage of 60 V. The device operates with a transition frequency of 20 MHz and dissipates up to 2 W of power. It is housed in a TO-220ML through-hole package, designed for high DC current gain applications.

Single Bipolar Transistors Feature Summary

• Darlington configuration providing high DC current gain
• Large current capacity and wide safe operating area
• Complementary design available with type 2SB1223

Single Bipolar Transistors Applications

• Industrial motor drive circuits
• High-current switching applications
• Power amplifier stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the component meets RoHS compliance requirements if mandated by your assembly process. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain NPN switch is required for moderate power levels. Ensure the application voltage does not exceed the 60 V collector-emitter breakdown limit. Consider the thermal resistance of the TO-220ML package and implement appropriate heat sinking if continuous operation near the 2 W dissipation limit is expected.

Single Bipolar Transistors Part Context

This transistor belongs to onsemi's discrete semiconductor portfolio, specifically within the single bipolar transistor category. It serves as a complementary pair to the 2SB1223 PNP Darlington transistor, facilitating push-pull or bridge circuit designs in power electronics and industrial control systems.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the 2SD1825A variant if pinout compatibility is maintained. Verify electrical parameters such as hFE and VCE(sat) against the original specification sheet to ensure functional equivalence in critical signal paths.