R3116N421A-TR-FE

Supervisors Overview

The R3116N421A-TR-FE is a low voltage detector from the Nisshinbo Micro Devices R3116N series, designed for precise power supply monitoring. It features an open-drain output and operates within a supply voltage range of 0.5 V to 6 V. The device detects voltages with a threshold accuracy of 0.8%, specifically set at 4.2 V. It includes a fixed reset delay time of 100 ms and supports battery backup switching. The component consumes only 1.5 µA of operating current and functions reliably between -40°C and +85°C in a compact SOT-23-5 package.

Supervisors Feature Summary

• Provides high-accuracy voltage detection with 0.8% threshold tolerance
• Features ultra-low power consumption suitable for battery-operated systems
• Includes a built-in reset delay function to prevent false triggering
• Supports battery backup switching for seamless power source transitions

Supervisors Applications

• Monitoring microprocessor and microcontroller power supplies
• Battery-powered portable electronic devices
• Automotive electronics requiring reliable voltage supervision
• Industrial control systems with strict power integrity needs

Supervisors Procurement Notes

Verify the specific suffix codes against official datasheets to ensure correct threshold voltage and package type. Confirm RoHS compliance status through manufacturer documentation. Check for alternative pin-compatible variants if supply constraints exist. Ensure ordering quantities align with standard reel sizes. Validate thermal performance requirements against the specified operating temperature range.

Supervisors Selection Notes

Select this component when a precise 4.2 V threshold is required for system supervision. Consider the 100 ms delay feature if noise immunity during power-up is critical. Evaluate the low quiescent current for applications where battery life is a primary constraint. Ensure the open-drain output configuration matches the downstream logic interface requirements.

Supervisors Part Context

This part belongs to the R3116N series of supervisory circuits manufactured by Nisshinbo Micro Devices. The series is characterized by high accuracy and low power consumption, targeting applications in consumer electronics, automotive systems, and industrial equipment. The R3116N421A variant specifically sets the detection threshold at 4.2 V, fitting within the broader family of adjustable or fixed-voltage detectors.

Supervisors Replacement Considerations

Check for direct substitutes within the R3116N series with different threshold voltages if system requirements change. Verify compatibility with other manufacturers' low-voltage detectors offering similar open-drain outputs and delay times. Ensure any replacement maintains the same SOT-23-5 footprint and electrical characteristics.