REF2930AIDBZR Equivalent & Substitute Parts

Part Overview

The REF2930AIDBZR is a series voltage reference IC manufactured by Texas Instruments, designed for precision power management applications. This fixed 3V output reference operates with ±2% tolerance and delivers 25 mA output current in a compact SOT-23-3 surface mount package. The device maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative components may be required due to inventory constraints, application-specific performance requirements, or design optimization needs for lower noise, improved accuracy, or reduced power consumption.

Substiute Parts

REF2930AIDBZR

Texas InstrumentsIn Stock: 64213REF2930AIDBZR Datasheet

Current PartRFQ

REF2930AIDBZT

Texas InstrumentsIn Stock: 1573REF2930AIDBZT Datasheet

Parametric EquivalentRFQ

ISL21010CFH330Z-TK

Renesas Electronics CorporationIn Stock: 8444ISL21010CFH330Z-TK Datasheet

MFR RecommendedRFQ

ISL21080CIH315Z-TK

Renesas Electronics CorporationIn Stock: 64777ISL21080CIH315Z-TK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the REF2930AIDBZR is determined by the following critical parameters: output voltage (3V fixed), package type (SOT-23-3), mounting method (surface mount), and operating temperature range (−40 to 125°C). Parts meeting these core requirements are considered parametric equivalents or functional alternatives.

The substitute parts are grouped as follows:

Parametric Equivalent (Same Packaging, Same Voltage Output): REF2930AIDBZT shares identical electrical specifications with the main part, differing only in packaging format (Digi-Reel versus standard cut tape). This part maintains the same 3V output, 25 mA current, ±2% tolerance, and SOT-23-3 package.

Manufacturer-Recommended Alternatives (Enhanced Performance): ISL21010CFH330Z-TK and ISL21080CIH315Z-TK are Renesas Electronics alternatives that offer improved accuracy and reduced noise characteristics. However, these parts introduce parameter variations that require engineering evaluation: ISL21010CFH330Z-TK maintains 3V output with superior ±0.2% tolerance but increases supply current to 100 µA; ISL21080CIH315Z-TK operates at 1.5V output with reduced current capability (7 mA), making it suitable only for applications tolerant of different voltage and current specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (No Design Changes Required): REF2930AIDBZT is the appropriate choice when inventory of the primary part is unavailable. This part maintains identical electrical performance and package specifications, requiring no circuit modifications or re-qualification.

Performance-Enhanced Substitution (Design Evaluation Required): ISL21010CFH330Z-TK offers superior output accuracy (±0.2% versus ±2%) and lower temperature coefficient (50 ppm/°C versus 100 ppm/°C), making it suitable for applications demanding tighter voltage regulation. The increased supply current (100 µA versus 59 µA) must be evaluated against power budget constraints. This part maintains 3V output and 25 mA current capability, preserving circuit compatibility.

Limited Compatibility Alternative: ISL21080CIH315Z-TK is not recommended as a direct substitute due to fundamental parameter mismatches: 1.5V output voltage and 7 mA maximum current are incompatible with circuits designed for 3V/25 mA operation. This part is suitable only for independent applications requiring low-voltage, low-current reference functionality. Additionally, the reduced operating temperature range (−40 to 85°C) limits applicability in extended-temperature environments.

All substitute parts maintain RoHS3 compliance, unlimited moisture sensitivity rating, and active product status, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can REF2930AIDBZT be used as a direct replacement for REF2930AIDBZR?

A: Yes. REF2930AIDBZT is a parametric equivalent with identical electrical specifications and SOT-23-3 package. The only difference is packaging format (Digi-Reel configuration). No circuit modifications are required.

Q: Is ISL21010CFH330Z-TK a suitable substitute for the REF2930AIDBZR?

A: ISL21010CFH330Z-TK is functionally compatible for applications where improved accuracy is beneficial. It maintains 3V output and 25 mA current capability. However, supply current increases from 59 µA to 100 µA. Verify that this increased quiescent current does not exceed system power budgets before implementation.

Q: Why is ISL21080CIH315Z-TK listed as an alternative if it has different voltage and current ratings?

A: ISL21080CIH315Z-TK is included for reference purposes only. Its 1.5V output and 7 mA maximum current make it incompatible with circuits designed for 3V/25 mA operation. This part is suitable only for independent applications with different voltage and current requirements.

Q: What are the key parameters that determine substitution compatibility?

A: Output voltage (3V fixed), output current capability (25 mA minimum), package type (SOT-23-3), and operating temperature range (−40 to 125°C) are the primary compatibility criteria. Parts matching these specifications are considered direct or near-direct substitutes.

Q: Does ISL21080CIH315Z-TK support the full operating temperature range of the REF2930AIDBZR?

A: No. ISL21080CIH315Z-TK operates from −40 to 85°C, which is narrower than the REF2930AIDBZR range of −40 to 125°C. Applications requiring operation above 85°C cannot use this part.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. REF2930AIDBZT, ISL21010CFH330Z-TK, and ISL21080CIH315Z-TK are all ROHS3 compliant with unlimited moisture sensitivity rating, maintaining regulatory compliance with the original part.