NSBC144EF3T5G

Overview

The NSBC144EF3T5G is a discontinued NPN Bias Resistor Transistor (BRT) from onsemi, housed in an SOT-1123 package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor (R1 = 47 kΩ) and a base-emitter resistor (R2 = 47 kΩ). Key electrical parameters include a collector-emitter voltage (VCEO) of 50 Vdc, continuous collector current (IC) of 100 mAdc, and input forward voltage of 40 Vdc. The device operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Integrates a single NPN transistor with a monolithic bias network containing two resistors to replace discrete components.
• Designed to simplify circuit design by reducing board space and component count.
• Manufactured using lead-free, halogen-free/BFR-free processes compliant with RoHS standards.

Applications

• General-purpose digital switching applications requiring integrated biasing.
• Interface circuits for microcontrollers or logic gates needing level shifting or buffering.
• Driver stages for low-power loads where simplified bias networks are preferred.

Procurement Notes

This component is officially listed as discontinued and is not recommended for new designs. Verification of availability should be conducted directly with the manufacturer or authorized distributors, as stock may be limited to surplus sources. Designers are advised to consult the official discontinuation notification and consider alternative active parts for long-term supply assurance.

Selection Notes

Selection requires confirmation that the application can accommodate a discontinued part due to potential supply constraints. The SOT-1123 package dimensions must fit the target PCB layout. Verify that the 47 kΩ internal resistor values align with the required base drive currents and logic levels. Thermal derating curves specific to the SOT-1123 package should be reviewed if operating near maximum power dissipation limits.

Part Context

The NSBC144EF3T5G belongs to the DTC144E family of digital transistors, which includes variants like MUN2213 and DTC144EE. These devices share identical electrical characteristics but differ in packaging styles such as SC-59, SOT-23, and SOT-723. The NSBC prefix typically denotes specific manufacturing sites or compliance requirements within the onsemi portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should contact onsemi representatives for recommendations on equivalent active devices or updated families suitable for new designs.