ZRC500A02STZ Equivalent & Substitute Parts

Part Overview

The ZRC500A02STZ is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 5V output with ±2% tolerance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates in the -40°C to 85°C temperature range and is packaged in TO-92 through-hole format, suitable for applications requiring precision voltage reference functionality.

Substiute Parts

ZRC500A02STZ

Diodes IncorporatedIn Stock: 1102ZRC500A02STZ Datasheet

Current PartRFQ

LM4040C50ILPR

Texas InstrumentsIn Stock: 22223LM4040C50ILPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ZRC500A02STZ is determined by the following critical parameters:

• Fixed 5V output voltage
• Through-hole TO-92 package compatibility
• Operating temperature range of -40°C to 85°C
• Shunt reference type with fixed output configuration
• ROHS3 compliance and REACH unaffected status

The LM4040C50ILPR from Texas Instruments meets all substitution criteria. While it offers improved specifications (±0.5% tolerance versus ±2%, and 15 mA output versus 5 mA), these enhancements maintain backward compatibility. The substitute maintains identical output voltage, package format, temperature range, and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The LM4040C50ILPR is the direct substitute for the obsolete ZRC500A02STZ. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The substitute is currently in active production status, providing supply continuity and long-term availability.

The LM4040C50ILPR offers enhanced performance characteristics including tighter tolerance (±0.5% versus ±2%), higher output current capability (15 mA versus 5 mA), and lower noise (80µVrms versus 105µVrms). These improvements are fully backward compatible with existing circuit designs, as the substitute meets or exceeds all critical electrical parameters of the original component.

Frequently Asked Questions (FAQ)

Q: Can the LM4040C50ILPR directly replace the ZRC500A02STZ in existing designs?

A: Yes. Both components provide identical 5V fixed output voltage, operate across the same temperature range (-40°C to 85°C), and use the same TO-92 through-hole package. The substitute's improved specifications do not introduce compatibility issues.

Q: What are the key differences between these components?

A: The LM4040C50ILPR offers superior tolerance (±0.5% versus ±2%), higher output current (15 mA versus 5 mA), and lower noise performance (80µVrms versus 105µVrms). The substitute maintains identical voltage output and package format.

Q: Are both components RoHS compliant?

A: Yes. Both the ZRC500A02STZ and LM4040C50ILPR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is the ZRC500A02STZ listed as obsolete?

A: The ZRC500A02STZ has been discontinued by Diodes Incorporated. The LM4040C50ILPR from Texas Instruments is the recommended active substitute for new designs and production continuity.

Q: Are there any package considerations when substituting?

A: Both components use identical TO-92-3 (TO-226AA) formed leads packaging. No PCB layout modifications are required for direct substitution.