NCV8405STCT1G

Overview

The NCV8405STCT1G is a self-protected low-side power switch IC from onsemi, designed for robust load distribution in automotive and industrial environments. It features an integrated N-channel MOSFET with a maximum continuous current limit of 6 A and a typical on-resistance of 210 mOhms. The device operates within a supply voltage range up to 40 V and supports a junction temperature range from -40°C to +150°C. Key protection mechanisms include thermal shutdown and overcurrent limiting with auto-restart functionality. Packaged in a compact SOT-223-3 surface-mount case, it meets AEC-Q100 qualification standards for automotive reliability.

Feature Summary

• Integrated self-protection circuitry providing automatic restart after fault conditions such as overcurrent or overheating.
• Low on-resistance output stage enabling efficient power delivery with minimal heat generation during normal operation.
• Automotive-grade qualification ensuring reliability under harsh environmental conditions and wide temperature variations.

Applications

• High-side and low-side load switching in automotive body electronics modules.
• Power distribution units (PDUs) for managing accessory loads in vehicles.
• Industrial motor control and solenoid driver applications requiring short-circuit protection.

Procurement Notes

Verify the specific suffix 'STCT1G' against official onsemi documentation to confirm tape-and-reel packaging quantities and exact marking codes. Ensure compatibility with existing PCB footprints for the SOT-223-3 package. Cross-reference with authorized distributors to confirm current availability and lead times, as automotive-grade components may have extended supply chains. Validate that the procurement source provides genuine parts with traceable lot numbers.

Selection Notes

Select this component when a single-channel low-side switch with inherent fault protection is required. It is suitable for replacing discrete MOSFETs and external protection circuits to reduce board space. Consider the 6 A current limit and 210 mOhm resistance for thermal management calculations. Ensure the application voltage does not exceed the 40 V rating. Verify that the auto-restart feature aligns with system recovery requirements after a fault event.

Part Context

This part belongs to the NCV8405A series of self-protected low-side drivers. It shares functional similarities with other members like the NCV8405ASTT1G but differs in packaging or reel specifications. The series is designed for automotive applications requiring high reliability and compact form factors. It complements onsemi's portfolio of power management solutions for vehicle electrification and chassis systems.

Replacement Considerations

Direct substitutes include NCV8405ASTT1G and NCV8405ASTT3G, which share identical electrical characteristics and pinouts. Verify package compatibility before substitution. Alternative devices from other manufacturers may require schematic and layout modifications due to differing pin configurations or protection thresholds.

FAQ

What happens if the NCV8405STCT1G experiences an overload?

The device enters current limit mode and will automatically restart once the fault condition is removed, provided the junction temperature remains within safe limits.

Is the NCV8405STCT1G qualified for automotive use?

Yes, it is AEC-Q100 qualified, making it suitable for demanding automotive electronic applications.