UMC5NT2

Overview

The UMC5NT2 is a dual complementary Bias Resistor Transistor (BRT) from onsemi, integrating one PNP and one NPN silicon transistor with monolithic bias resistor networks into a single SC-88A/SOT-353 package. It features a maximum collector-emitter voltage of 50 Vdc and a continuous collector current of 100 mAdc for both devices. The integrated resistors are specified at 4.7 kΩ for the base series resistor and 10 kΩ for the base-emitter resistor in both channels. Operating temperature ranges from -65°C to +150°C.

Feature Summary

• Integrates a single PNP and NPN transistor with internal biasing resistors to replace discrete components
• Reduces printed circuit board space requirements by consolidating multiple parts into one surface-mount package
• Simplifies circuit design by eliminating external resistor networks typically required for digital transistor biasing

Applications

• Low power surface mount applications where board space is limited
• Digital switching circuits requiring complementary logic levels
• Interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the specific suffix 'T' or 'G' against the datasheet ordering information to confirm tape and reel packaging specifications. Confirm that the device marking corresponds to 'U5' for the UMC5NT2 variant. Ensure the application environment remains within the stated thermal limits to maintain reliability.

Selection Notes

Select this component when a compact solution is needed for driving complementary loads. The fixed resistor values suit standard logic families. Evaluate the thermal resistance characteristics if high ambient temperatures are expected. Compare against other series variants like UMC2NT1 or UMC3NT1 if different resistor ratios better match the target circuit impedance.

Part Context

This part belongs to the UMC2NT1/UMC3NT1/UMC5NT1 family of preferred devices designed for low-power surface mount applications. These BRTs are engineered to minimize component count while maintaining reliable switching performance. The family shares identical pinouts and physical dimensions, differing primarily in the internal resistor values to accommodate various drive requirements.

Replacement Considerations

Direct substitutes include UMC5NT1 and UMC5NT1G, which share identical electrical characteristics and pinout configurations. Verify that any replacement maintains the same SOT-353 footprint and Pb-Free compliance status.