REF3233AIDBVTG4 Equivalent & Substitute Parts

Part Overview

The REF3233AIDBVTG4 is a series voltage reference IC from Texas Instruments, designed to provide a fixed 3.3V output with ±0.2% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in SOT-23-6 surface mount configuration. The part is currently marked as Obsolete, making identification of suitable substitute components essential for ongoing production and design continuity. Equivalent parts must maintain the same output voltage, tolerance specifications, and package form factor while meeting current availability and compliance requirements.

Substiute Parts

REF3233AIDBVTG4

Texas InstrumentsIn Stock: 773REF3233AIDBVTG4 Datasheet

Current PartRFQ

REF3233AIDBVT

Texas InstrumentsIn Stock: 2074REF3233AIDBVT Datasheet

MFR RecommendedRFQ

REF3433IDBVR

Texas InstrumentsIn Stock: 19422REF3433IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the REF3233AIDBVTG4 are selected based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Fixed output voltage of 3.3V
• SOT-23-6 surface mount package
• 10 mA output current capability
• Operating temperature range of -40°C ~ 125°C
• ROHS3 compliance and MSL rating of 2

Substitution Logic: The REF3233AIDBVT serves as a direct functional equivalent, maintaining identical electrical specifications and package configuration. The REF3433IDBVR represents an enhanced alternative, offering improved performance characteristics (tighter tolerance and lower noise) while maintaining the same output voltage, current rating, and package form factor. Both substitutes are available from Texas Instruments and meet the same compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

REF3233AIDBVT: This part maintains identical electrical and mechanical specifications to the REF3233AIDBVTG4. It is classified as "Not For New Designs," indicating limited future availability. Selection of this substitute is appropriate only when direct pin-for-pin compatibility with existing designs is required and no design modifications are feasible.

REF3433IDBVR: This part is the recommended substitute for new designs and ongoing production. It carries Active product status, ensuring long-term availability and supply chain stability. The REF3433IDBVR offers superior performance characteristics, including tighter tolerance (±0.05% versus ±0.2%), lower temperature coefficient (6ppm/°C versus 20ppm/°C), and significantly reduced noise levels. The wider input voltage range (3.8V ~ 12V) provides greater design flexibility. Lower supply current consumption (95µA versus 135µA) reduces power dissipation. All three parts share identical SOT-23-6 packaging and meet ROHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can REF3233AIDBVT be used as a direct replacement for REF3233AIDBVTG4?

A: Yes. Both parts are electrically and mechanically identical, with the same output voltage (3.3V), tolerance (±0.2%), current rating (10 mA), and SOT-23-6 package. No circuit modifications are required for substitution.

Q: What are the advantages of using REF3433IDBVR instead of REF3233AIDBVTG4?

A: The REF3433IDBVR provides improved performance with tighter tolerance (±0.05%), lower temperature coefficient (6ppm/°C), and reduced noise characteristics. It also features lower supply current (95µA) and a wider input voltage range (3.8V ~ 12V). Most importantly, it carries Active product status, ensuring continued availability.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the SOT-23-6 package and are pin-compatible. No PCB modifications are necessary for substitution.

Q: Which substitute should be selected for new designs?

A: REF3433IDBVR is the recommended choice for new designs due to its Active product status and superior performance specifications. It provides long-term supply chain stability and enhanced electrical characteristics.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant with MSL rating of 2 (1 Year). They meet identical environmental and regulatory standards.

Q: What is the impact of the wider input voltage range in REF3433IDBVR?

A: The REF3433IDBVR accepts input voltages from 3.8V to 12V, compared to 3.35V to 5.5V for the REF3233AIDBVTG4. This wider range provides greater flexibility in power supply design and may eliminate the need for additional voltage regulation in some applications.

Q: Are there any thermal or power dissipation differences between the substitutes?

A: The REF3433IDBVR consumes less supply current (95µA versus 135µA), resulting in lower power dissipation and reduced thermal load. This may improve overall system efficiency and thermal management.