ZR285R03STOB

Overview

The ZR285R03STOB is a shunt precision voltage reference manufactured by Diodes Incorporated, designed for through-hole mounting in TO-92 packages. It provides a fixed output voltage of 2.5 V with an initial accuracy tolerance of ±3%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 90 ppm/°C. Electrical specifications include a maximum shunt current of 20 mA and a minimum operating current of 20 µA. Classified under PMIC power management ICs, it serves as a stable two-terminal reference source.

Feature Summary

• Provides a fixed 2.5 V reference output via a two-terminal shunt architecture
• Ensures stability across industrial temperatures with defined thermal drift characteristics
• Compatible with standard through-hole E-Line or TO-92 leaded package formats

Applications

• Precision analog-to-digital converter (ADC) reference inputs
• Digital-to-analog converter (DAC) voltage sources
• Battery-powered instrumentation requiring low standby current

Procurement Notes

Verify component authenticity against official Diodes Incorporated datasheets due to obsolete status. Confirm package variant matches TO-92 requirements. Check for RoHS compliance documentation if required by assembly standards. Ensure supply chain sources provide traceable manufacturing records. Validate electrical parameters against specific lot testing data before integration into critical designs.

Selection Notes

Select this component when a low-cost, through-hole shunt reference is required for 2.5 V applications. Consider the ±3% initial accuracy and 90 ppm/°C temperature coefficient against circuit tolerance needs. Evaluate the 20 µA minimum current requirement for low-power systems. Compare against higher precision alternatives if tighter tolerances are necessary for the specific application environment.

Part Context

This part belongs to the ZR series of shunt voltage references from Diodes Incorporated. It utilizes bipolar technology for stable operation. The series includes variants with different output voltages and accuracies. The ZR285R03STOB specifically targets cost-sensitive applications where moderate precision is sufficient. It is categorized under PMIC voltage references in industry classification systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with direct replacements such as ZR285Y01STZ only if voltage and accuracy specifications align with design requirements. Consult manufacturer obsolescence notices for recommended new design-ins.