2SD1866TV2

Single Bipolar Transistors Overview

The ROHM Semiconductor 2SD1866TV2 is a medium power NPN transistor designed for motor and relay drive applications. It features an integrated zener diode between the collector and base, a built-in resistor between the base and emitter, and a damper diode. The device operates with a collector-emitter voltage of 50V to 70V and supports a continuous collector current of 2A. Packaged in the ATV format, it provides robust protection against reverse surges associated with inductive loads.

Single Bipolar Transistors Feature Summary

• Built-in zener diode between collector and base
• Integrated resistor between base and emitter
• Built-in damper diode
• Protection against reverse surges from inductive loads

Single Bipolar Transistors Applications

• Motor drive circuits
• Relay driver circuits
• Inductive load switching

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix TV2 corresponds to the ATV package and standard packing quantity of 2500 units. Confirm that the component meets RoHS standards as indicated in the datasheet. Ensure the design accounts for the absolute maximum ratings, particularly the collector power dissipation limits under various mounting conditions.

Single Bipolar Transistors Selection Notes

Select this component when high gain amplification or switching of inductive loads is required. The internal circuitry simplifies external component requirements by integrating protective elements directly into the transistor package. Consider the ATV package dimensions and thermal characteristics for appropriate heat dissipation strategies in the final assembly.

Single Bipolar Transistors Part Context

This part belongs to the 2SD1866 series, which includes variants like the 2SD2212 and 2SD2143. These transistors share similar electrical characteristics but differ in packaging types such as MPT3, CPT3, and ATV. The series is optimized for medium power applications requiring reliable performance in driving motors and relays.

Single Bipolar Transistors Replacement Considerations

Equivalent parts include the 2SD2212 and 2SD2143. Verify pinout compatibility and package type before substitution. The 2SD2212 uses MPT3 packaging, while the 2SD2143 utilizes CPT3 packaging. Ensure the replacement matches the required hFE rank and packaging specifications.

Single Bipolar Transistors FAQ

What is the function of the built-in zener diode?

The built-in zener diode between the collector and base protects the transistor from voltage spikes and reverse surges generated by inductive loads.

How does the internal resistor affect operation?

The built-in resistor between the base and emitter helps stabilize the transistor's operation and prevents false triggering due to noise or leakage currents.

What is the purpose of the damper diode?

The damper diode provides additional protection against voltage transients and ensures safe switching of inductive loads by clamping reverse voltages.