ZRC500A02

Overview

The ZRC500A02 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 (E-Line) package.

Feature Summary

• Bandgap circuit design for stable micropower voltage reference
• Capacitor-free operation with stable performance under capacitive loads
• Rugged design withstands transient effects up to 200mA
• Fast transient response reaching stable conditions in microseconds

Applications

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

Procurement Notes

This component is officially obsolete and no longer manufactured. Verify availability through authorized distributors for remaining stock or consider the listed replacement options. Ensure that any sourced units match the original specifications and packaging requirements for your specific application needs.

Selection Notes

Select this part for applications requiring a precise 5V reference in space-constrained designs using through-hole mounting. Consider the ±2% tolerance and 90ppm/°C temperature coefficient against system requirements. Evaluate the operating current range and transient response capabilities for low-power or battery-driven circuits.

Part Context

The ZRC500 series includes variants in SOT23, SO8, and E-Line packages with tolerances of 1%, 2%, and 3%. The ZRC500A02 specifically denotes the 2% tolerance version in the E-Line package. This family is designed for industrial temperature ranges and offers superior switching capability compared to standard references.

Replacement Considerations

LM4040C50ILPR (Texas Instruments)