ZXRE1004FRSTZ

Overview

The ZXRE1004FRSTZ is a discontinued shunt precision voltage reference from Diodes Incorporated, providing a nominal output of 1.22V with an initial accuracy tolerance of 3%. It operates within a current range of 8µA to 20mA and features a typical temperature coefficient of 20ppm/°C. The device utilizes a SOT-23 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides a stable 1.22V bandgap reference voltage suitable for precision applications
• Designed for ultra-low power consumption with a typical knee current of 4µA
• Maintains excellent stability and is unconditionally stable under capacitive loads
• Offers high performance as an alternative to legacy REF1004 and LT1004 references

Applications

• Battery powered equipment
• Portable instrumentations
• Data acquisition systems
• Test equipment

Procurement Notes

This component is officially marked as obsolete and not recommended for new design by the manufacturer. Verify end-of-life status and confirm availability through authorized distributors before procurement. Ensure that any existing stock meets quality standards and complies with RoHS directives. Consider long-term supply risks associated with discontinued parts.

Selection Notes

Select this part only if the specific 1.22V output and 3% tolerance align with circuit requirements. Evaluate the low knee current capability for battery-operated designs. Confirm compatibility with existing PCB footprints and thermal constraints. Review datasheet specifications for dynamic impedance and noise characteristics to ensure signal integrity in sensitive analog paths.

Part Context

The ZXRE1004 series represents a micro-power voltage reference family designed for space-constrained portable electronics. This specific variant offers a standard 3% tolerance option in a compact SOT-23 package. It serves as a drop-in replacement for older industry-standard references while providing improved power efficiency and stability characteristics.

Replacement Considerations

The datasheet explicitly recommends using the ZXRE125 as a replacement for this obsolete product. Verify pinout compatibility and electrical parameter alignment when transitioning to alternative components. Consult manufacturer documentation for updated equivalents that meet modern automotive or industrial qualification standards.