ZRC500A02STZ

Overview

The ZRC500A02STZ is a discontinued precision shunt voltage reference IC manufactured by Diodes Incorporated. It provides a fixed 5V output with ±2% initial accuracy and operates within an industrial temperature range of -40°C to +85°C. The device utilizes a bandgap circuit design, offering a typical temperature coefficient of 90ppm/°C and low knee current characteristics. It supports cathode currents from 25µA to 5mA, ensuring stability without external capacitors. The component is housed in a TO-92 (TO-226AA) through-hole package.

Feature Summary

• Bandgap circuit design providing stable 5V reference without requiring external stabilizing capacitors
• Capable of withstanding transient effects and high currents up to 200mA due to rugged construction
• Fast transient response achieving stable operating conditions within microseconds
• Low knee current operation suitable for micropower and battery-powered applications

Applications

• Battery powered and portable equipment
• Instrumentation systems
• Test equipment
• Metering and measurement systems

Procurement Notes

This part number is officially obsolete and no longer manufactured. Verification should focus on identifying active replacement components rather than sourcing the original unit. Cross-reference compatible shunt references with matching voltage, tolerance, and package specifications. Confirm availability and lead times for substitute parts before finalizing procurement plans.

Selection Notes

Select this component for applications requiring a stable 5V reference in space-constrained designs using through-hole mounting. Verify that the required operating current falls within the recommended 25µA to 5mA range. Ensure the system can handle potential transient currents if switching loads rapidly. Check compatibility with existing PCB footprints designed for TO-92 packages.

Part Context

The ZRC500 series includes various package options such as SOT-23, SO8, and E-Line styles. The A02 suffix denotes the ±2% tolerance variant in the E-Line package family. This series is designed for general-purpose precision referencing where low power consumption and stability are critical requirements.

Replacement Considerations

LM4040C50ILPR Texas Instruments

FAQ

Does the ZRC500A02STZ require an external capacitor for stability?

No, the device design provides a stable voltage without the need for an external stabilizing capacitor.

What is the maximum current the device can withstand during transients?

While the recommended operating current is up to 5mA, the rugged design allows it to withstand transient currents up to 200mA.