2SD1191

Single Bipolar Transistors Overview

The 2SD1191 is a power NPN silicon transistor manufactured by onsemi, formerly Sanyo. It features a Darlington configuration with built-in bias resistor and diode. The device is housed in a TO-220AB flange mount package. Key electrical parameters include a maximum collector current of 7A, a collector-emitter breakdown voltage of 60V, and a minimum DC current gain (hFE) of 2000. The component is designed for high-current switching applications.

Single Bipolar Transistors Feature Summary

• Darlington configuration integrated with built-in bias resistor and diode
• High current capacity suitable for power switching
• Flange mount package for effective thermal management

Single Bipolar Transistors Applications

• Power switching circuits
• Motor control systems
• Relay drivers

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as the part was originally produced by Sanyo before acquisition by onsemi. Confirm the specific suffix (e.g., -RC) matches the required packaging or compliance specifications. Ensure the TO-220AB package type aligns with your thermal design requirements. Check for RoHS compliance status if applicable to your manufacturing standards.

Single Bipolar Transistors Selection Notes

Select this component when high current handling up to 7A is required alongside high gain characteristics. The integrated bias resistor simplifies drive circuitry compared to standard Darlington pairs. Consider the 60V voltage rating for low-to-medium voltage applications. The flange mount package necessitates appropriate heatsinking strategies for sustained operation.

Single Bipolar Transistors Part Context

This transistor belongs to the power bipolar transistor category, specifically utilizing Darlington technology for enhanced current amplification. The integration of internal components reduces external circuit complexity. It serves as a discrete semiconductor solution for industrial and consumer electronics requiring robust switching capabilities.

Single Bipolar Transistors Replacement Considerations

Direct substitutes may include other NPN Darlington transistors with similar 7A/60V ratings and TO-220 packages. Verify pinout compatibility and thermal resistance values. Cross-reference datasheets for hFE minimums and saturation voltages to ensure functional equivalence.