NCV8402STT1G

Overview

The NCV8402STT1G is a single-channel, low-side power switch IC manufactured by onsemi. It integrates an N-channel MOSFET with control logic and protection features in a SOT-223 package. Key electrical parameters include a drain-source breakdown voltage (Vds) of 42 V and a continuous drain current (Id) of 2 A. The device exhibits a maximum on-resistance (Rds(on)) of 200 mOhms and operates within a junction temperature range of -40°C to +150°C. It is qualified under the AEC-Q100 standard for automotive applications.

Feature Summary

• Integrates a low-side N-channel MOSFET driver with built-in fault protection mechanisms.
• Features automatic restart functionality following overcurrent or overtemperature events.
• Includes fixed current limiting, thermal shutdown, and overvoltage protection circuits.

Applications

• Automotive lighting systems
• General-purpose load switching in vehicle electronics
• Power distribution units requiring low-side control

Procurement Notes

Verify the exact suffix against official documentation, as 'NCV8402ASTT1G' is the primary documented variant. Confirm AEC-Q100 qualification status and specific Rds(on) tolerances via the manufacturer datasheet before integration. Ensure the ordering part number matches the required temperature grade and packaging configuration.

Selection Notes

Select this component for applications requiring robust low-side switching with integrated protection. The 42V rating suits 12V automotive systems. Verify that the 2A current capacity meets load requirements. Consider the SOT-223 thermal performance for the specific PCB layout. Compare against high-side alternatives if polarity requirements differ.

Part Context

This device belongs to the NCV8402 family of protected power switches designed for automotive environments. It serves as a compact solution for replacing discrete MOSFETs and gate drivers, reducing board space and simplifying design. The series emphasizes reliability through integrated fault management and automotive-grade qualification standards.

Replacement Considerations

The NCV8402ASTT1G is a verified substitute within the same product line. Check pinout compatibility and thermal characteristics when replacing discrete components. Ensure the replacement maintains the required AEC-Q100 certification for the target application.

FAQ

What type of fault protection does the NCV8402STT1G provide?

It provides fixed current limiting, thermal shutdown, and overvoltage protection, with automatic restart capability after fault clearance.

Is this component suitable for automotive applications?

Yes, it is AEC-Q100 qualified and designed for operation in harsh automotive environments with a wide temperature range.