R3111H421A-T1-FE

Supervisors Overview

The R3111H421A-T1-FE is a low voltage detector manufactured by Nisshinbo Micro Devices. It operates within a supply voltage range of up to 10 V and features a threshold voltage of 4.2 V. The device utilizes an open-drain output configuration and supports surface mount installation in an SOT-89-3 package. It functions as a single-input monitor without manual reset or watchdog timer capabilities, operating reliably between -40°C and +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed threshold detection level
• Utilizes an open-drain output interface for system integration
• Designed for compact surface-mount applications in small packages

Supervisors Applications

• Battery backup switching circuits
• Low voltage status indication
• Power supply monitoring systems

Supervisors Procurement Notes

Verify the specific suffix T1 against official datasheets to confirm the SOT-89-3 package variant. Ensure the threshold voltage code matches the required 4.2 V detection level for your design. Confirm RoHS compliance status through the manufacturer's current documentation before finalizing procurement specifications.

Supervisors Selection Notes

Select this component when a fixed 4.2 V detection point is required for single-channel monitoring. The open-drain output requires appropriate pull-up resistor selection. Verify that the SOT-89-3 package fits the PCB layout constraints and thermal requirements of the target application environment.

Supervisors Part Context

This part belongs to the R3111 series of low voltage detectors from Nisshinbo Micro Devices. The series offers various threshold voltages and package options. The H-series typically denotes specific threshold ranges within the product line, providing reliable monitoring solutions for portable and industrial electronics requiring stable power supervision.

Supervisors Replacement Considerations

Check for direct substitutes within the R3111 family with matching 4.2 V thresholds and SOT-89-3 packaging. Verify pinout compatibility and electrical characteristics such as supply voltage limits and output type before substituting.