ZRC330A01

Overview

The ZRC330A01 is a precision micropower shunt voltage reference providing a fixed output of 3.3V, manufactured by Diodes Incorporated. It utilizes a bandgap circuit design to achieve high stability without requiring an external stabilizing capacitor. The device operates within a recommended current range of 20μA to 5mA and supports an industrial temperature range from -40°C to +85°C. It features a typical knee current of 15μA and offers a tight initial accuracy tolerance of ±1%. The component is housed in a standard E-Line, 3-pin through-hole package.

Feature Summary

• Bandgap circuit design ensures stable voltage regulation without the need for external capacitors.
• Low knee current characteristic enables efficient operation in battery-powered and portable applications.
• Rugged construction withstands transient effects and currents up to 200mA despite a 25mA absolute maximum rating.
• Superior switching capability allows the device to reach stable operating conditions within microseconds.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'A' corresponds to the E-Line, 3-pin package configuration before procurement. Confirm that the ±1% tolerance variant meets the design requirements, as other tolerances exist within the family. Ensure the application current remains within the 20μA to 5mA recommended range for optimal performance. Check for end-of-life status or discontinuance notifications prior to finalizing the bill of materials.

Selection Notes

Select this component when a precise 3.3V reference with high accuracy (±1%) is required in a through-hole format. The low minimum operating current makes it suitable for energy-constrained designs. Consider the thermal dissipation limits if operating near the upper current boundaries. Verify that the package dimensions fit the available PCB space compared to surface-mount alternatives like SOT23.

Part Context

This part belongs to the ZRC330 series of precision voltage references from Diodes Incorporated. The series includes variants with different tolerances (1%, 2%, 3%) and packages (SOT23, SO8, E-Line). The ZRC330A01 specifically denotes the 1% tolerance version in the E-Line, 3-pin package. Other suffixes such as F, N8, R, and Y indicate different package types or pin configurations within the same functional family.

Replacement Considerations

Direct substitutes include ZRC330A02 (2% tolerance) and ZRC330A03 (3% tolerance) in the same E-Line package. Surface-mount equivalents are ZRC330F01 (SOT23) and ZRC330N801 (SO8). Verify pinout compatibility, particularly regarding Pin 1 floating or connection options, when transitioning between package styles.

FAQ

Does the ZRC330A01 require an external capacitor for stability?

No, the device provides a stable voltage without an external stabilizing capacitor and is stable with capacitive loads.

What is the recommended operating current range for this device?

The recommended operating current range is between 20μA and 5mA.

How does the ZRC330A01 handle transient effects?

The rugged design and 20-volt processing allow the reference to withstand transient effects and currents up to 200mA.